triangle

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UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈtraɪæŋgəl/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/ˈtraɪˌæŋgəl/ ,USA pronunciation: respelling(trīang′gəl)


WordReference Random House Learner's Dictionary of American English © 2020
tri•an•gle /ˈtraɪˌæŋgəl/USA pronunciation   n. [countable]
  1. Mathematicsa closed plane figure having three sides and three angles:an equilateral triangle.
  2. a flat, three-sided piece of metal or plastic, with straight edges, used with a T square for drawing lines, etc.
  3. any three-cornered or three-sided figure or piece:a triangle of land.
  4. a delicate situation involving three persons, esp. one in which two of them are in love with the third.
tri•an•gu•lar /traɪˈæŋgyəlɚ/USA pronunciation  adj. 

WordReference Random House Unabridged Dictionary of American English © 2020
tri•an•gle  (trīang′gəl),USA pronunciation n. 
  1. a closed plane figure having three sides and three angles.
  2. a flat triangular piece, usually of plastic, with straight edges, used in connection with a T square for drawing perpendicular lines, geometric figures, etc.
  3. any three-cornered or three-sided figure, object, or piece:a triangle of land.
  4. a musical percussion instrument that consists of a steel triangle, open at one corner, that is struck with a steel rod.
  5. a group of three;
    triad.
  6. a situation involving three persons, esp. one in which two of them are in love with the third.
  7. ([cap.]) [Astron.]the constellation Triangulum.
tri an′gled, adj. 
  • Latin triangulum, noun, nominal use of neuter of triangulus three-cornered. See tri-, angle1
  • Middle English 1350–1400

Collins Concise English Dictionary © HarperCollins Publishers::
triangle /ˈtraɪˌæŋɡəl/ n
  1. a three-sided polygon that can be classified by angle, as in an acute triangle, or by side, as in an equilateral triangle. Sum of interior angles: 180°; area: ½base × height
  2. any object shaped like a triangle
  3. any situation involving three parties or points of view
    See also eternal triangle
  4. a percussion instrument consisting of a sonorous metal bar bent into a triangular shape, beaten with a metal stick
  5. a group of three
Etymology: 14th Century: from Latin triangulum (noun), from triangulus (adjective), from tri- + angulus corner

ˈtriˌangled adj
'triangle' also found in these entries:
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