x-ray

UK/ˈɛks ɹeɪ/US/ˈɛks ˌɹeɪ/

noun

A ray of short-wavelength electromagnetic radiation usually produced by bombarding a metal target in a vacuum. Used to create images of the internal structure of objects; this is possible because X-rays pass through most objects and can expose photographic film.

“The doctor ordered some X-rays of my injured wrist.”

Meanings

x-ray1

nounx-ray (plural x-rays)

plural x-rays

  1. Alternative letter-case form of X-ray.

    … analogous to x-ray image formation …

    ante 2002, J. S. Sandhu and H. Wang, Recent Advances in Acoustography-Based NDE, published in Recent Advances in Experimental Mechanics (Emmanuel E. Gdoutos, editor; →ISBN), page 381
verbx-ray (third-person singular simple present x-rays, present participle x-raying, simple past and past participle x-rayed)

present singular third person x-rays · participle present x-raying · participle past x-rayed · past x-rayed

  1. Alternative letter-case form of X-ray.

X-ray2

nounX-ray (plural X-rays)

plural X-rays · alternative x-ray · alternative Xray · alternative xray · alternative Ex-ray · alternative ex-ray · alternative Ex ray · alternative ex ray

  1. A ray of short-wavelength electromagnetic radiation usually produced by bombarding a metal target in a vacuum. Used to create images of the internal structure of objects; this is possible because X-rays pass through most objects and can expose photographic film.

    X-rays are light with a wavelength between 0.1 and 10 nm.

    Synonyms: Röntgen radiation, Roentgen-ray

  2. A radiograph: an image made with X-rays.

    The doctor ordered some X-rays of my injured wrist.

    1 more example

    And this friendly was not without its injury worries, with defender Gary Cahill substituted early on after a nasty, needless push by Dries Mertens that caused him to collide with goalkeeper Joe Hart, an incident that left the Chelsea defender requiring a precautionary X-ray at Wembley.

    2012 June 2, Phil McNulty, “England 1-0 Belgium”, in BBC Sport
  3. An X-ray machine, a machine for performing radiography.
  4. board gamesA tactical motif where a piece exerts influence or control over a square, piece, or line indirectly through another intervening piece.
  5. video gamesA cheat that allows a user to see other players, enemies and important objects through walls and other barriers.

    Near-synonym: ESP

    Synonyms: wallhack, ESP

verbX-ray (third-person singular simple present X-rays, present participle X-raying, simple past and past participle X-rayed)

present singular third person X-rays · participle present X-raying · participle past X-rayed · past X-rayed · alternative x-ray · alternative Xray · alternative xray · alternative Ex-ray · alternative ex-ray · alternative Ex ray · alternative ex ray

  1. informaltransitiveTo take a radiograph of; to obtain an image of using X-ray radiation, especially for the purpose of medical diagnostic evaluation.

    Of course there was nothing wrong with my left wrist. They X-rayed the wrong arm!

    1 more example

    1925, Sidney Coe Howard, They Knew What They Wanted (Doubleday, Page and Company), Act II, page 116. Both legs broken in the morning. Tibia, fibula, femur, and ischium. X-rayed and set inside of an hour after the accident.

  2. transitiveboard gamesOf a piece, to exert indirect influence, by either attacking, defending, or controlling an opponent's or friendly piece through an intervening piece along a rank, file, or diagonal.
adjectiveX-ray (not comparable)

alternative x-ray · alternative Xray · alternative xray · alternative Ex-ray · alternative ex-ray · alternative Ex ray · alternative ex ray

  1. not comparableOf or relating to X-rays.

    I had to put my bags through an X-ray scanner at the airport.

    1 more example

    Who will fly and have X-ray eyes— And be known as the man no bullet can kill?

    1974, Shel Silverstein, “Who”, in Where the Sidewalk Ends, HarperCollins

Synonyms & antonyms

nounA ray of short-wavelength electromagnetic radiation usually produced by bombarding a metal target in a vacuum. Used to create images of the internal structure of objects; this is possible because X-rays pass through most objects and can expose photographic film.

nounA cheat that allows a user to see other players, enemies and important objects through walls and other barriers.

More synonyms by meaning

nounelectromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target

nouna radiogram made by exposing photographic film to X rays; used in medical diagnosis

Similar

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. GermanX-Strahl
  2. EnglishX-ray

From X + ray, a calque of German X-Strahl, coined by Wilhelm Röntgen upon his discovery of the rays in 1895, where X signifies their unknown nature. The chess sense is metaphorical, referring to control passing through a seemingly solid barrier.

Full word history & related roots →

Translations

Arabic أَشِعَّة إِكْس, أَشِعَّة سِينِيَّة
  • أَشِعَّة إِكْس (ʔašiʕʕat ʔeks)short wavelength electromagnetic radiation
  • أَشِعَّة سِينِيَّة (ʔašiʕʕa siniyya)short wavelength electromagnetic radiation
  • صُورَة أَشِعَّةphotograph made with X-rays
Bulgarian ре́нтген, ре́нтгенов лъч
  • ре́нтген (réntgen)short wavelength electromagnetic radiation
  • ре́нтгенов лъч (réntgenov lăč)short wavelength electromagnetic radiation
  • ре́нтген (réntgen)photograph made with X-rays
Catalan raig X, radiografia
  • raig Xshort wavelength electromagnetic radiation
  • radiografiaphotograph made with X-rays
Chinese Cantonese X光
  • X光 (iks¹ gwong¹, ik¹ si⁴ gwong¹)short wavelength electromagnetic radiation
Chinese Mandarin 艾克斯射線 /艾克斯射线, 愛克斯射線 /爱克斯射线
  • 艾克斯射線 /艾克斯射线 (àikèsī shèxiàn)short wavelength electromagnetic radiation
  • 愛克斯射線 /爱克斯射线 (àikèsī shèxiàn)short wavelength electromagnetic radiation
  • X射線 /X射线 (X shèxiàn)short wavelength electromagnetic radiation
  • X光 (X guāng)short wavelength electromagnetic radiation
  • 愛克斯光 /爱克斯光 (àikèsī guāng)short wavelength electromagnetic radiation
  • X光片 (X-guāngpiàn)photograph made with X-rays
  • X光照片 (X-guāng zhàopiàn)photograph made with X-rays
  • X線照片 /X线照片 (X-xiàn zhàopiàn)photograph made with X-rays
  • 片子 (piānzi)photograph made with X-rays
  • 拍X光 (pāi X-guāng)to take a radiograph of
  • 照X光 (zhào X-guāng)to take a radiograph of
Czech rentgen, rentgenové záření
  • rentgenshort wavelength electromagnetic radiation
  • rentgenové zářeníshort wavelength electromagnetic radiation
  • rentgenový paprsekshort wavelength electromagnetic radiation
  • RTGphotograph made with X-rays
  • rentgenphotograph made with X-rays
  • rentgenX-ray machine
Danish røntgenstråle, røntgenbillede
  • røntgenstråleshort wavelength electromagnetic radiation
  • røntgenbilledephotograph made with X-rays
Dutch röntgenstraal, röntgenfoto
  • röntgenstraalshort wavelength electromagnetic radiation
  • röntgenfotophotograph made with X-rays
  • röntgenapparaatX-ray machine
  • doorlichtento take a radiograph of
  • bestralento take a radiograph of
  • röntgenento take a radiograph of
  • met röntgenstralen onderzoekento take a radiograph of
Esperanto ikso-radioj, rentgena radiado
  • ikso-radiojshort wavelength electromagnetic radiation
  • rentgena radiadoshort wavelength electromagnetic radiation
  • x-radiadoshort wavelength electromagnetic radiation
Estonian röntgenikiir, röntgen
  • röntgenikiirshort wavelength electromagnetic radiation
  • röntgenshort wavelength electromagnetic radiation
Finnish röntgensäteily, röntgenkuva
  • röntgensäteilyshort wavelength electromagnetic radiation
  • röntgenkuvaphotograph made with X-rays
  • röntgenlaiteX-ray machine
  • ottaa röntgenkuvato take a radiograph of
  • röntgenkuvatato take a radiograph of
French rayon X, rayon Röntgen
  • rayon Xshort wavelength electromagnetic radiation
  • rayon Röntgenshort wavelength electromagnetic radiation
  • radiographiephotograph made with X-rays
  • radiographierto take a radiograph of
German Röntgenstrahl, Röntgenbild
  • Röntgenstrahlshort wavelength electromagnetic radiation
  • Röntgenbildphotograph made with X-rays
  • RöntgenapparatX-ray machine
  • röntgento take a radiograph of
Greek ακτίνα Χ, ακτινοβολία Χ
  • ακτίνα Χ (aktína Ch)short wavelength electromagnetic radiation
  • ακτινοβολία Χ (aktinovolía Ch)short wavelength electromagnetic radiation
  • ακτινογραφία (aktinografía)photograph made with X-rays
  • ακτινογράφος (aktinográfos)X-ray machine
  • ακτινοσκοπώ (aktinoskopó)to take a radiograph of
Hebrew קַרנֵי רֶנְטְגֶן, צילום רנטגן
  • קַרנֵי רֶנְטְגֶן (karné réntgen)short wavelength electromagnetic radiation
  • צילום רנטגן (tsilúm réntgen)photograph made with X-rays
  • מכונת רנטגן (mekhonát réntgen)X-ray machine
  • צילם (tsilém)to take a radiograph of
Hindi एक्स-रे, क्ष-किरण
  • एक्स-रे (eks-re)short wavelength electromagnetic radiation
  • क्ष-किरण (kṣ-kiraṇ)short wavelength electromagnetic radiation
Hungarian röntgensugárzás, röntgensugár
  • röntgensugárzásshort wavelength electromagnetic radiation
  • röntgensugárshort wavelength electromagnetic radiation
  • röntgenphotograph made with X-rays
  • röntgenberendezésX-ray machine
  • röntgenezto take a radiograph of
  • röntgenof or having to do with X-rays
Icelandic gegnumlýsa, röntgen-
  • gegnumlýsato take a radiograph of
  • röntgen-of or having to do with X-rays
Indonesian ronsen, rontgen
  • ronsenshort wavelength electromagnetic radiation
  • rontgenshort wavelength electromagnetic radiation
  • sinar-Xshort wavelength electromagnetic radiation
  • radiasi-Xshort wavelength electromagnetic radiation
  • sinar-Xphotograph made with X-rays
Irish X-gha, X-ghathú
  • X-ghashort wavelength electromagnetic radiation
  • X-ghathúphotograph made with X-rays
  • X-ghathaighto take a radiograph of
  • X-ghathachof or having to do with X-rays
Italian raggi X, radiografia
  • raggi Xshort wavelength electromagnetic radiation
  • radiografiaphotograph made with X-rays
  • radiografareto take a radiograph of
  • schermografareto take a radiograph of
  • radiograficoof or having to do with X-rays
Japanese X線, エックス線
  • X線short wavelength electromagnetic radiation
  • エックス線 (ekkusu-sen)short wavelength electromagnetic radiation
  • レントゲン線 (Rentogen-sen)short wavelength electromagnetic radiation
  • レントゲン (Rentogen)short wavelength electromagnetic radiation
  • X線写真photograph made with X-rays
  • エックス線写真 (ekkusu-sen shashin)photograph made with X-rays
  • レントゲン写真 (Rentogen shashin)photograph made with X-rays
  • X線撮影装置X-ray machine
  • エックス線撮影装置 (ekkusu-sen satsueisōchi)X-ray machine
  • レントゲン撮影装置 (Rentogen satsueisochi)X-ray machine
  • レントゲンを撮る (rentogen wo toru)to take a radiograph of
Korean X선, 엑스선
  • X선short wavelength electromagnetic radiation
  • 엑스선 (ekseuseon)short wavelength electromagnetic radiation
  • X레이short wavelength electromagnetic radiation
  • 엑스레이 (ekseurei)short wavelength electromagnetic radiation
  • 뢴트겐선 (roenteugenseon)short wavelength electromagnetic radiation
  • 뢴트겐 (roenteugen)short wavelength electromagnetic radiation
  • 렌트겐 (renteugen)short wavelength electromagnetic radiation
  • X레이 사진photograph made with X-rays
  • 엑스레이 사진 (ekseurei sajin)photograph made with X-rays
  • X선 촬영장치X-ray machine
  • 엑스선 촬영장치 (ekseuseon chwaryeongjangchi)X-ray machine
  • X레이를 찍다to take a radiograph of
  • 엑스레이를 찍다 (ekseurei-reul jjikda)to take a radiograph of
Latvian rentgens, rentgena stari
  • rentgensshort wavelength electromagnetic radiation
  • rentgena starishort wavelength electromagnetic radiation
Lithuanian rentgenas
  • rentgenasshort wavelength electromagnetic radiation
Malay sinar-X, X-ray
  • sinar-Xshort wavelength electromagnetic radiation
  • X-rayshort wavelength electromagnetic radiation
Norwegian Bokmål røntgenstråle, røntgenbilde
  • røntgenstråleshort wavelength electromagnetic radiation
  • røntgenbildephotograph made with X-rays
  • røntgenfotografereto take a radiograph of
Polish promieniowanie rentgenowskie, prześwietlenie
  • promieniowanie rentgenowskieshort wavelength electromagnetic radiation
  • prześwietleniephotograph made with X-rays
  • zdjęcie rentgenowskiephotograph made with X-rays
  • aparat rentgenowskiX-ray machine
  • prześwietlaćto take a radiograph of
  • prześwietlićto take a radiograph of
  • rentgenowskiof or having to do with X-rays
Portuguese raios X, raio-X
  • raios Xshort wavelength electromagnetic radiation
  • raio-Xphotograph made with X-rays
  • radiografiaphotograph made with X-rays
  • máquina de raio XX-ray machine
  • tirar raio X (de)to take a radiograph of
  • tirar uma chapa (de)to take a radiograph of
Romanian raze X, raze Roentgen
  • raze Xshort wavelength electromagnetic radiation
  • raze Roentgenshort wavelength electromagnetic radiation
  • radiografiephotograph made with X-rays
Russian рентге́новский луч, рентге́н
  • рентге́новский луч (rentgénovskij luč)short wavelength electromagnetic radiation
  • рентге́н (rentgén)short wavelength electromagnetic radiation
  • рентге́н (rentgén)photograph made with X-rays
  • рентгеногра́мма (rentgenográmma)photograph made with X-rays
  • рентге́н (rentgén)X-ray machine
  • просве́чивать (prosvéčivatʹ)to take a radiograph of
  • просвети́ть (prosvetítʹ)to take a radiograph of
  • рентге́новский (rentgénovskij)of or having to do with X-rays
Slovak röntgen, röntgenové žiarenie
  • röntgenshort wavelength electromagnetic radiation
  • röntgenové žiarenieshort wavelength electromagnetic radiation
  • röntgenový lúčshort wavelength electromagnetic radiation
  • röntgenphotograph made with X-rays
  • röntgenovaťto take a radiograph of
Spanish rayos X, radiografía
  • rayos Xshort wavelength electromagnetic radiation
  • radiografíaphotograph made with X-rays
  • radiografiarto take a radiograph of
Swahili eksirei, uyoka
  • eksireishort wavelength electromagnetic radiation
  • uyokashort wavelength electromagnetic radiation
  • eksireiphotograph made with X-rays
Swedish röntgenstråle, röntgenbild
  • röntgenstråleshort wavelength electromagnetic radiation
  • röntgenbildphotograph made with X-rays
  • röntgenapparatX-ray machine
  • röntgato take a radiograph of
Tagalog rayos-ekis, X-ray
  • rayos-ekisshort wavelength electromagnetic radiation
  • X-rayshort wavelength electromagnetic radiation
  • rayos-ekisinto take a radiograph of
Thai เอ็กซ์เรย์, รังสีเอกซ์
  • เอ็กซ์เรย์ (èk-ree)short wavelength electromagnetic radiation
  • รังสีเอกซ์ (rang-sǐi-èk)short wavelength electromagnetic radiation
Turkish X ışını, röntgen
  • X ışınıshort wavelength electromagnetic radiation
  • röntgenphotograph made with X-rays
  • röntgen cihazıX-ray machine
  • X-ray cihazıX-ray machine
Ukrainian рентге́н, рентге́нівський про́мінь
  • рентге́н (renthén)short wavelength electromagnetic radiation
  • рентге́нівський про́мінь (renthénivsʹkyj próminʹ)short wavelength electromagnetic radiation
  • рентге́н (renthén)photograph made with X-rays
  • робити рентген (robyty renthen)to take a radiograph of
Urdu ایکْس شُعَاع, ایکْس رے
  • ایکْس شُعَاع (eks śu'ā')short wavelength electromagnetic radiation
  • ایکْس رے (eks re)short wavelength electromagnetic radiation
Vietnamese tia X
  • tia Xshort wavelength electromagnetic radiation
Welsh pelydr X
  • pelydr Xshort wavelength electromagnetic radiation
Cite this entry
APA

x-ray. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/x-ray

MLA

“x-ray.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/x-ray. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “x-ray,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/x-ray.

Source: x-ray on Wiktionary, CC BY-SA 4.0.