150 Nouns That Start with X | Best List with Definitions and Examples


In this article we are going to share with you a list of nouns that start with X. You will be seeing most of these nouns for the very first time, so a single reading will not be enough to memorize them all. You need to go through this list of nouns starting with X several times if you want to learn them properly.

You might also be quite familiar of the fact that in English language, there are few common nouns that start with X. The reason for this is that X as a consonant does not possess a distinctive sound in the English language.

We all know that nouns help us in comprehending this world of ours. The nouns beginning with X given in this article have been taken from diverse fields, cultures, languages and cultures, therefore you will have the chance of learning a number of new concepts that you weren’t aware of before.

Most of these nouns that start with X belong to the fields of Chemistry and Biology for example, xenograft, Xenon, xanthophyll, xanthine, xenyl, xylene, xanthium, and so on. Hopefully you would have a pleasurable experience learning them all.

Nouns That Start with X You Always Use

Noun refers to individuals, things, ideas, and different items around us on the planet. Following is a list of nouns that start with X that people use the most in their lives.

1. X-axis 

  • Definition: the horizontal plane in a Cartesian coordinate system
  • Synonyms: x-plane
  • Example: In a graph, the x-axis is perpendicular to the y-axis.

2. Xenograft

  • Definition: a graft of tissue taken from a donor of one species and grafted into a recipient of another species
  • Synonyms: xenotransplant
  • Example: Coxsackie B virus causes myocarditis and might endanger the pig heart in an immune suppressed recipient of a xenograft.

3. Xenon

  • Definition: a chemical element that is a gas with no color or smell
  • Synonyms: gas
  • Example: Xenon does not react with other elements and is used in some types of light bulb.

4. Xylography

  • Definition: the art of engraving on wood or of printing from woodblocks
  • Synonyms: (none)
  • Example: He became a professor of xylography at the Scuola Professionale of Florence.

5. X-ray 

  • Definition: a photographic or digital image of the internal composition of something, especially a part of the body, produced by X-rays being passed through it
  • Synonyms: radiogram, radiograph
  • Example: The fracture was clearly visible on the X-ray.

6. X-wing

  • Definition: fictional Starfighters from the original Star Wars trilogy and the expanded universe.
  • Synonyms: Starfighter
  • Example: Beck was assigned to X-wing on the day of Valdes’ death.

7. Xanthophyll

  • Definition: a yellow or brown carotenoid plant pigment which causes the autumn colours of leaves
  • Synonyms: (none)
  • Example: Xanthophylls are carotenoids that occur widely in nature.

8. Xebec

  • Definition: a usually 3-masted Mediterranean sailing ship with long overhanging bow and stern
  • Synonyms: ship
  • Example: Xebec, with its distinctive graceful look, is good all-around ship that can be used in multiple roles.

9. Xenobiology

  • Definition: the study of synthesizing and manipulating biological devices and systems
  • Synonyms: (none)
  • Example: Jack is specializing in xenobiology.

10. Xerophyte

  • Definition: a species of plant that has adaptations to survive in an environment with little liquid water
  • Synonyms: desert plant
  • Example: Jack’s garden is an outstanding landscape of xerophytes.

Nouns That Start with X You Usually Use

Almost every sentence you create will feature a noun, making this one of the most important aspects of English grammar. Following is a list of nouns starting with X that people usually make use.

1. Xanthan

  • Definition: a polysaccharide, consisting of galactose and mannose residues, produced by the bacterium Xanthomonas campestris
  • Synonyms: gum
  • Example: Some mixtures contain a small amount of xanthan gum that acts as a binder.

2.  Xanthide

  • Definition: a crystalline compound related in structure to uric acid
  • Synonyms: (none)
  • Example: Xanthide is a crystalline compound found in blood and urine which is an intermediate in the metabolic breakdown of nucleic acids to uric acid.

3. Xenyl

  • Definition: the radical characteristic of xenylic compounds
  • Synonyms: (none)
  • Example: Xenyl definition is a univalent radical C6H5C6H4 derived from biphenyl.

4. Xianyang

  • Definition: the capital of China in the Qin dynasty
  • Synonyms: (none)
  • Example: Xianyang is located in the south of the Qin ling Mountains and in the north of Wei River.

5. Xeroderma

  • Definition: a disease of the skin characterized by dryness and roughness and a fine scaly desquamation
  • Synonyms: ichthyosis
  • Example: Xeroderma can be caused by a deficiency of vitamin A.

6. Xylene

  • Definition: a flammable hydrocarbon obtained from wood and coal tar
  • Synonyms: (none)
  • Example: The ship contained xylene, a clear, flammable volatile liquid.

7. Xylograph

  • Definition: an engraving on wood
  • Synonyms: engraving
  • Example: He was seen carving a xylograph in the jungle.

8. Xylose

  • Definition: a colorless, crystalline pentose sugar, C5H10O5, derived from xylan
  • Synonyms: sugar
  • Example: Xylose is often used as a food sweetener and is the source of xylitol.

9. Xi’an

  • Definition: a large city and capital of Shaanxi Province in central China
  • Synonyms: (none)
  • Example: Xi’an is an ancient city full of treasures and saintly relics.

10. Xanthate

  • Definition: a salt or ester of a xanthic acid
  • Synonyms: salt, saline
  • Example: Xanthate is produced from wood cellulose in reaction with sodium hydroxide and carbon disulfide.

Nouns That Start with X You Often Use

Following are some of nouns beginning with X that are often put to use. How many of these nouns that begin with the letter X do you often use in your speech and writing?

1. Xanthium

  • Definition: a genus of coarse and rough or spiny herbs (family Compositae)
  • Synonyms: herb, weed
  • Example: Xanthium is a genus of flowering plants in the sunflower tribe within the daisy family, native to the Americas and eastern Asia.

2. Xenogenesis

  • Definition: the production of an offspring that is unlike either of its parents
  • Synonyms: (none)
  • Example: All babies who were produced using xenogenesis died within a few days.

3. Xerostomia

  • Definition: abnormal dryness of the mouth due to insufficient secretions
  • Synonyms: dry mouth
  • Example: Experts say that xerostomia is usually caused by inadequate function of the salivary glands.

4. Xu

  • Definition: a coin formerly minted by South Vietnam
  • Synonyms: currency
  • Example: One Xu equals one-hundredth of a dong.

5. Xylite

  • Definition: a colorless carbohydrate, C5H12O5, prepared by the reduction of xylose.
  • Synonyms: (none)
  • Example: Xylite is a liquid hydrocarbon found in crude wood spirits.

6. Xanthine

  • Definition: a yellowish-white crystalline purine base
  • Synonyms: (none)
  • Example: The researchers suggest that chemicals in tea called xanthines aid the development of eggs and embryos.

7. Xenology

  • Definition: (chiefly in science fiction) the scientific study of alien biology, cultures, etc.
  • Synonyms: (none)
  • Example: The command staff of xenology had had the difficult assignment of establishing contact with the aliens.

8. Xiamen

  • Definition: a port city on China’s southeast coast, across a strait from Taiwan
  • Synonyms: (none)
  • Example: On this particular junket to Xiamen he was shopping for real estate.

9. Xanthoma

  • Definition: a skin disease marked by yellowish patches on the skin
  • Synonyms: lipodosis, hyperlipidemias, skin disease
  • Example: Xanthoma usually has inflammation nearby.

10. Xenocryst

  • Definition: a rock or crystal engulfed by magma and retained as an inclusion in the resulting igneous rock
  • Synonyms: rock, crystal
  • Example: Probable xenocrysts of quartz have been identified at the volcano.

Nouns That Start with X You Sometimes Use

Nouns make the bulk of English vocabulary and it is a must that we try and learn as many of them as possible. These nouns that start with the letter X that people use sometimes only.

1. Xenelasia

  • Definition: the practice in ancient Doric Crete and Lacedaemonia of expelling foreigners deemed injurious to the public welfare
  • Synonyms: expulsion, removal
  • Example: In exchange for retracting the Megarian Decree, the Athenians demanded from Sparta to abandon their practice of xenelasia.

2. Xerophthalmia

  • Definition: a progressive eye disease caused by vitamin A deficiency
  • Synonyms: (none)
  • Example: Xerophthalmia can dry out your tear ducts and eyes.

3. Xylocopa 

  • Definition: a taxonomic genus within the subfamily Xylocopinae — the carpenter bees
  • Synonyms: bees
  • Example: James was stung by a xylocopa.

4. Xining

  • Definition: the capital of Qinghai province in western China, and the largest city on the Tibetan Plateau
  • Synonyms: (none)
  • Example: We landed in Xining and loaded up with more supplies, lots of water, instant noodles and a generator.

5. Xalapa

  • Definition: the capital city of the Mexican state of Veracruz
  • Synonyms: (none)
  • Example: When I was doing the show, we used to go down to Xalapa.

6. Xanthorhiza

  • Definition: a shrub from North America with deep yellow roots
  • Synonyms: yellowroot, plant, shrub
  • Example: Xanthorhiza is native to the eastern United States from Maine south to northern Florida and west to Ohio and eastern Texas.

7. Xanthorrhoea

  • Definition: a plant from Australia with a thick stem and long, grass like leaves
  • Synonyms: flower, plant, perennial
  • Example: Xanthorrhoea has a special place in the heart of many Australians.

8. Xanthosis

  • Definition: the yellow discoloration often seen in cancerous tumors
  • Synonyms: (none)
  • Example: Xanthosis is associated sometimes with malignancies.

9. Xylorcin

  • Definition: a derivative of xylene obtained as a white crystalline substance
  • Synonyms: (none)
  • Example: She is synthesizing xylorcin in the lab.

10. Xanthogen

  • Definition:  a hypothetical radical formerly supposed to exist in xanthic acid and its compounds
  • Synonyms: (none)
  • Example: Xanthogen is often used as a sulfide mineral collector.

Nouns That Start with X You Occasionally Use

There are certain nouns that people only use on specific occasions. These are some of the nouns with letter X that are occasionally made use of.

1. Xenogamy

  • Definition: fertilization by cross-pollination; especially cross-pollination between flowers on different plants
  • Synonyms: cross-pollination, fertilization
  • Example: This fruit is largely produced through geitonogamy and xenogamy.

2. Xochimilco

  • Definition: the last living link of the Aztec civilization
  • Synonyms: (none)
  • Example: The next morning very early we marched towards Xochimilco, and arrived in front of that town about eight in the morning.

3. Xerophagy

  • Definition: the form of fasting observed during Great Lent and certain other fasts, in which vegetables cooked with water and salt are eaten, together with such things as fruit, nuts, and bread
  • Synonyms: fasting
  • Example: From Ash Wednesday until Easter Day they keep xerophagy except on Saturdays and Sundays.

4. Xai-Xai

  • Definition: a district of Gaza Province in south-western Mozambique
  • Synonyms: (none)
  • Example: The cities of Chokwe, Chibuto, and Xai Xai all had damage to their water systems.

5. Xanthidium

  • Definition: minute unicellular algae
  • Synonyms: green algae, scum, residue
  • Example: Ehrenberg interpreted xanthidium as being originally siliceous and thought them to be desmids.

6. Xanthophane

  • Definition: yellow pigment in the inner segments of the retina
  • Synonyms: pigment
  • Example: Xanthophane is the yellow form of chromophane.

7. Xankandi

  • Definition: the capital of Nagorno-Karabakh in southern Azerbaijan
  • Synonyms: (none)
  • Example: I have never been to Xankandi!

8. Xanthoprotein

  • Definition: a yellow acid formed by hot nitric acid on protein matter
  • Synonyms: (none)
  • Example: Xanthoprotein is synthesized after a tricky procedure.

9. Xanthopuccine

  • Definition: a yellow crystal alkaloid
  • Synonyms: (none)
  • Example: Xanthopuccine is one of three alkaloids found in the root of the yellow puccoon.

10. Xinyang

  • Definition: a prefecture-level city in southeastern Henan province, People’s Republic of China
  • Synonyms: (none)
  • Example: My friends are planning a trip to Xinyang.

Nouns That Start with X You Seldom Use

Nouns are indispensable because without them we would not be able to name things this world contains. Let’s us now go through a list of noun words that start with X. You must be seeing most of these noun words starting with X for the very first time, so try and be more attentive.

1. Xanthinine

  • Definition: a nitrogenous substance related to uric acid
  • Synonyms: powder, urea
  • Example: Xanthinines such as caffeine and theobromine are cAMP-phosphodiesterase inhibitors.

2. Xinxiang

  • Definition: site of the Battle of Muye where the Shang Dynasty was overthrown by the Zhou
  • Synonyms: (none)
  • Example: With the development of history Xinxiang and administrative district division has been changing all the time.

3. Xanthoxylum

  • Definition: prickly shrubs or small trees with deep yellow bark and roots
  • Synonyms: rue, prickly ash, Hercules club
  • Example: Xanthoxylum oil has a therapeutic effect on hyperlipemia in mice.

4. Xeraphim

  • Definition: an old money from India, equal to three fifths of a rupee
  • Synonyms: cash, currency, money
  • Example: A xeraphim is equal to three fifths of a rupee.

5. Xico

  • Definition: a city located in the central part of the state of Veracruz.
  • Synonyms: (none)
  • Example: Xico is famous for the production of coffee, tropical fruit, wine, handicrafts, and other products.

6. Xeriff

  • Definition: a gold coin formerly used in Egypt and Turkey
  • Synonyms: money, coin, doubloon
  • Example: One xeriff equals almost $2.30.

7. Xiphias

  • Definition: a swordfish
  • Synonyms: broadbill, fish, billfish
  • Example: The light of Xiphias galvanised her.

8. Xiphodon

  • Definition: an extinct camel-like mammal
  • Synonyms: ungulate, artiodactyl
  • Example: Xiphodon is an extinct genus of artiodactyl mammals found in European Eocene formations.

9. Xylanthrax

  • Definition: wood coal, or charcoal; distinct from mineral coal
  • Synonyms: coal, lignite, cinder
  • Example: I’ve got the steaks, you just bring the xylanthrax.

10. Xylophagan

  • Definition: a beetle whose larvae live in wood
  • Synonyms: insect, bug
  • Example: Xylophagan is a genus of bivalves in the family Pholadidae.

Positive Nouns That Start with X

If you want to learn some positive words this category is just for you. Let us now go through the list of positive nouns that start with X given below.

1. Xalam

  • Definition: a traditional lute like string instrument of West Africa
  • Synonyms: lute, instrument
  • Example: Xalam is typically played by griots.

2. Xylitol

  • Definition: a naturally occurring alcohol found in most plant material, including many fruits and vegetables
  • Synonyms: alcohol
  • Example: Research shows that xylitol is extremely effective in helping to prevent both tooth decay and harmful plaque from building up on your teeth.

3. X-games

  • Definition: an extreme sports competition presented by ESPN
  • Synonyms: competition, extreme sports, tournament
  • Example: He is an expert when it comes to playing X-games.

4. X-factor 

  • Definition: a variable in a given situation that could have the most significant impact on the outcome
  • Synonyms: feature, hallmark
  • Example: The young vote may turn out to be the X-factor.

5. Xenodochy 

  • Definition: the reception of or extending of hospitality to strangers or foreigners
  • Synonyms: hospitality
  • Example: Ahmed is famous for his xenodochy.

6. Xenodochium

  • Definition: in the Middle Ages, a room in a monastery for receiving and entertaining guests
  • Synonyms: parlor, den, housing
  • Example: He also was responsible in his will for donating his house for the establishment of a xenodochium.

7. Xenium

  • Definition: a gift, usually food items, given to a guest or foreign diplomat in ancient Greece and Rome
  • Synonyms: present, gift
  • Example: In God’s name, and my own, I order that the xenium be carried to the hall of St. Andrew, and there, be distributed to the strangers and poor.

8. Xylopyrography

  • Definition: the technique of making a picture or design on wood using a hot iron or another heated instrument.
  • Synonym: wood printing
  • Example: Nehmad produced primarily abstract prints employing various techniques, often including xylopyrography.

9. Xmas

  • Definition: Christmas —now used chiefly for brevity in advertisements, headlines, etc.
  • Synonyms: Christmas
  • Example: A merry Xmas to all our readers!

10. Xylophone 

  • Definition: a musical instrument consisting of flat wooden bars of different lengths
  • Synonyms: musical-instrument
  • Example: Katie was taught to play the xylophone by her friend.

Nouns That Start with X to Describe a Person

Following is a list of nouns that start with X to describe a person, his character, profession etc. Try and commit to memory as many of these X nouns as possible.

1. Xenagogue 

  • Definition: a tour guide
  • Synonyms: escort, attendant
  • Example: Our xenagogue guided us well through the city.

2. Xenophobia

  • Definition: dislike of or prejudice against people from other countries
  • Synonyms: racism, racial hatred
  • Example: Stalin used anti-Semitism to fuel Great Russian xenophobia after 1947.

3. Xenophilia

  • Definition: the love for, attraction to, or appreciation of foreign people, manners, customs, or cultures etc.
  • Synonyms: (none)
  • Example: I do have a bit of xenophilia with respect to food though.

4. Xylopolist

  • Definition: one who sells timber; a timber-merchant
  • Synonyms: timber merchant
  • Example: He is one of the best xylopolists in the market.

5. Xenomania

  • Definition: an inordinate attachment to foreign things (as customs, institutions, manners, fashions)
  • Synonyms: tendency, inclination
  • Example: They treated the passengers wholeheartedly out of xenomania.

6. Xylographer

  • Definition: a person who makes xylographs (the art of making engravings on wood especially for printing)
  • Synonyms: (none)
  • Example: In 1886, he married a xylographer.

7. Xenophobe

  • Definition: a person who strongly dislikes or fears foreigners, their customs, their religions, etc.
  • Synonyms: racist, bigot
  • Example: They say they are being unfairly typecast as xenophobes and racists.

8. Xena

  • Definition: a tough, physical, confident woman
  • Synonyms: strong lady
  • Example: Sophia is a xena who faces everything with courage.

9. Xenophile

  • Definition: a person attracted to, foreign people, manners, customs, or cultures etc.
  • Synonyms: (none)
  • Example: The American professor is a xenophile particularly interested in Roman cathedrals.

10. Xper

  • Definition: extreme programmer
  • Synonyms: programmer, hacker
  • Example: My friend Nudbah is an xper, she can hack anything.

Nouns That Start with X – Full List (150 Words)

The list of nouns that start with X provided below includes all of the nouns described above and more you could ever need. This list will help you recollect your thoughts about nouns we have learned in this article.

  • X
  • Xanthide
  • Xylophagides
  • Xiphias
  • Xenyl
  • Xanthoxylene
  • Xystarch
  • Xanthorhoea
  • Xylitone
  • X-Wing
  • Xanthoxylum
  • Xenogamy
  • Xenogenesis
  • Xylenol
  • Xanthine
  • Xylophone
  • Xfactor
  • Xoanon
  • Xystus
  • Xenodochium
  • Xerostomia
  • Xylem
  • Xyloquinone
  • Xiphura
  • Xanthoma
  • Xanthelasma
  • X-Ray
  • Xanthinine
  • Xylite
  • Xerif
  • Xyst
  • Xylidine
  • X-Factor
  • Xylitol
  • Xalam
  • Xerophyte
  • Xenomania
  • Xenelasia
  • Xebec
  • Xylophone 
  • Xylanthrax
  • Xanthate
  • Xerophthalmy
  • Xiphisternum
  • Xenium
  • Xylamide
  • Xenobiotic
  • Xining
  • Xenology
  • Xenotime
  • Xico
  • Xylocopa
  • Xenophilia
  • Xylobalsamum
  • Xanthorhamnin
  • Xylopolist
  • Xylophaga
  • Xanthose
  • Xylorcin
  • Xalapa
  • Xesturgy
  • Xenodochy
  • Xanthamide
  • Xenagogue 
  • Xylograph
  • X-games
  • Xanthosis
  • Xenodochy 
  • Xenophobe
  • Xeraphim
  • Xylocopa 
  • Xerophagy
  • Xanthoprotein
  • Xenograft
  • Xylotile
  • Xenografts
  • Xenon
  • Xylophilan
  • Xeronate
  • Xeres
  • X-ray 
  • Xenobiology
  • Xanthidium
  • Xanthochroi
  • Xiphidium
  • Xenomi
  • Xanthopuccine
  • Xanthan
  • Xylose
  • Xenolith
  • Xenocrysts
  • X-Axis
  • Xerophthalmia
  • Xylate
  • Xanthogen
  • Xyster
  • Xiphiplastron
  • Xylonite
  • Xinyang
  • Xiphodon
  • Xena
  • Xylyl
  • Xenagogue
  • Xianyang
  • Xenurine
  • Xiphius
  • Xylopyrography
  • Xper
  • Xiphosura
  • Xenocryst
  • Xenophobia
  • Xanthorrhoea
  • Xanthogenate
  • Xylylene
  • Xyloidin
  • Xenodocheionology
  • X-factor 
  • Xanthophyll
  • Xochimilco
  • Xinxiang
  • Xanthorhiza
  • Xylophagan
  • Xeriff
  • Xylographer
  • Xylene
  • Xylotrya
  • Xanthippe
  • Xanthin
  • Xiamen
  • Xyris
  • Xylography
  • Xenoliths
  • Xu
  • Xenopterygii
  • Xmas
  • Xanthium
  • Xylindein
  • Xenophile
  • Xylostein
  • Xankandi
  • Xi’an
  • Xylogen
  • Xeroderma
  • Xai-Xai
  • X-Mas
  • Xeme
  • Xanthophane
  • X-axis 
  • Xylol
  • Xd

Final Thoughts on Nouns That Start with X

Thank you for going through this article on nouns that start with X. It is hoped that you would have learnt some interesting new nouns starting with X.

As nouns beginning with X are very rare you definitely need to add them to your vocabulary list. If you get hold of a bunch of these nouns, you will hugely benefit from it. You will look really cool and knowledgeable if you use them in the company of your friends and colleagues.

This is why it is requested that you put in maximum efforts in learning these nouns that start with X. You are also advised to recommend this article to your friends, so that they can benefit from it as well.