triangle

English · Français · Thesaurus

AI In plain words

Writing a short explanation…

Written by a house AI from the entry below, in your language. The entry itself is the source.

triangle¹

  • /ˈtɹaɪəŋɡəl/ UK
  • /ˈtɹaɪˌæŋɡəl/ UK
  • /ˈtɹaɪˌæŋɡəl/ US

Rhymes with -aɪæŋɡəl, -æŋɡəl

Where it comes from

PIE word

*tréyes

From Middle English triangle, from Old French triangle, from Latin triangulum, noun use of adjective triangulus (“three-cornered, having three angles”), from trēs (“three”) + angulus (“corner, angle”), equivalent to tri- + -angle.

noun triangles

  1. A polygon with three sides and three angles. Meronyms: angle, side, cathetus, leg, hypotenuse; see also Thesaurus:polygon

    Similar: threeside, trigon

  2. Canada, US A set square.
  3. A percussion instrument made by forming a metal rod into a triangular shape which is open at one angle. It is suspended from a string and hit with a metal bar to make a resonant sound.
  4. A triangular piece of equipment used for gathering the balls into the formation required by the game being played.
  5. A love triangle. One of the writers' most pleasing inventions was to treat the triangle love story as comedy.

    Similar: love triangle, menage à trois

  6. The structure of systems composed with three interrelated objects.
  7. A draughtsman's square in the form of a right-angled triangle.
  8. historical, plural normally A frame formed of three poles stuck in the ground and united at the top, to which people were bound for corporal punishment. I was flogged in 1840. To this day I feel a pain in the chest from the triangles.
  9. Any of various large papilionid butterflies of the genus Graphium.

    Similar: bluebottle

  10. A triangular formation of railway tracks, with a curve on at least one side. After turning on the triangle at Jeumont, we set off light engine back to Aulnoye.

    Similar: wye

Similar: △, triangle

verb triangles · triangling · triangled

  1. To form or be included in a three-part interaction, e.g., a Karpman drama triangle, such as by being ganged up on by two people or being torn between conflicting demands from two sources.

Triangle²

Where it comes from

From triangle; in North Carolina from being a triangular region.

proper noun

  1. The area comprising the cities of Raleigh, Durham and Chapel Hill in North Carolina. Used with "the" except when attributive. I moved to the Triangle two years ago.
  2. A town in Broome County, New York.
  3. A census-designated place in Prince William County, Virginia.
  4. A community in Newfoundland and Labrador, Canada, seemingly in Labrador.
  5. A hamlet in Hewelsfield and Brockweir parish, Forest of Dean district, Gloucestershire (OS grid ref SO5401).
  6. A suburb of Burntwood in Hammerwich parish, Lichfield district, Staffordshire (OS grid ref SK0507).
  7. A small village south-west of Sowerby Bridge, Calderdale borough, West Yorkshire (OS grid ref SE0422).
  8. A small town in Masvingo province, Zimbabwe.
  9. abbreviation, ellipsis Ellipsis of Bermuda Triangle

Thesaurus

Closest in meaning: trigon, trilateral, triangular, direction, tripartite, trio, triptych, delta, wye, pattern, junction, advance, prd, trigone, trigonum, triquetra

noun

Similar: △, triangle

Translations

Every language

noun polygon

Españoltriángulo
한국어삼각 samgak, 삼각형 samgakhyeong, 세모 semo
日本語三角 sankaku, 三角形 sankakukei
中文三角 sānjiǎo, 三角形 sānjiǎoxíng
हिन्दीत्रिकोण trikoṇ, त्रिभुज tribhuj
Kiswahilipembetatu
Portuguêstriângulo
Françaistriangle
DeutschDreieck
Italianotriangolo
Ελληνικάτρίγωνο trígono
Românătriunghi
Русскийтреуго́льник treugólʹnik
Tiếng Việttam giác, hình tam giác
العربيةمُثَلَّث muṯallaṯ
עבריתמשולש \ מְשֻׁלָּשׁ meshulásh

noun percussion instrument

Españoltriángulo
한국어트라이앵글 teuraiaenggeul
日本語トライアングル toraianguru
中文三角鐵 /三角铁 sānjiǎotiě
Portuguêstriângulo, ferrinhos
Françaistriangle
DeutschTriangel
Italianotriangolo
Ελληνικάτρίγωνο trígono
Românătrianglu
Русскийтреуго́льник treugólʹnik
Tiếng Việtkẻng tam giác, kẻng ba góc
עבריתמשולש \ מְשֻׁלָּשׁ meshulásh

Talk about this word

Cite this
MLA

"triangle." Wiktionary, via Micwyn, micwyn.com/word/triangle. Accessed 6 Nov. 2026.

APA

triangle. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/triangle

Chicago

"triangle." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/triangle.

BibTeX
@misc{triangle_2026,
  title = {triangle},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/triangle},
  urldate = {2026-11-06}
}