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triangular

UK:^*^*UK and possibly other pronunciationsUK and possibly other pronunciations/traɪˈæŋgjʊlə^r/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/traɪˈæŋgjəlɚ/ ,USA pronunciation: respelling(trī ang′gyə lər)

tri•an•gu•lar (trī ang′gyə lər),USA pronunciation adj.

pertaining to or having the form of a triangle; three-cornered.
having a triangle as base or cross section:a triangular prism.
comprising three parts or elements;
triple.
pertaining to or involving a group of three, as three persons, parties, or things.

Latin triangulāris, equivalent. to triangul(um) triangle + -āris -ar¹
1535–45

tri•an ′gu•lar•ly, adv.

Collins Concise English Dictionary © HarperCollins Publishers::

triangular /traɪˈæŋɡjʊlə/ adj

Also: trigonal of, shaped like, or relating to a triangle; having three corners or sides
of or involving three participants, pieces, or units
having a base shaped like a triangle

tri•an•gle /ˈtraɪˌæŋgəl/USA pronunciation n. [countable]

Mathematicsa closed plane figure having three sides and three angles:an equilateral triangle.
a flat, three-sided piece of metal or plastic, with straight edges, used with a T square for drawing lines, etc.
any three-cornered or three-sided figure or piece:a triangle of land.
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.

tri•an•gle (trī′ang′gəl),USA pronunciation n.

a closed plane figure having three sides and three angles.
a flat triangular piece, usually of plastic, with straight edges, used in connection with a T square for drawing perpendicular lines, geometric figures, etc.
any three-cornered or three-sided figure, object, or piece:a triangle of land.
a musical percussion instrument that consists of a steel triangle, open at one corner, that is struck with a steel rod.
a group of three;
triad.
a situation involving three persons, esp. one in which two of them are in love with the third.
([cap.]) [Astron.]the constellation Triangulum.

Latin triangulum, noun, nominal use of neuter of triangulus three-cornered. See tri-, angle¹
Middle English 1350–1400

tri ′an′gled, adj.

'triangular' also found in these entries (note: many are not synonyms or translations):

arrowhead - balalaika - beechnut - brazil nut - coccyx - convolvulus - crosse - cusp - delta wing - deltoid - épée - fillet - gable - genoa - gore - gusset - harp - harpsichord - jib - kingpin - king post - landing net - lateen - leg-of-mutton - Maltese cross - Negev - patella - pediment - pendentive - pennon - poplar - prism - pyramid - rack - samosa - scapula - scarf - sedge - shepherd's-purse - spandrel - spider crab - spinnaker - squid - staysail - tanga - trapezius - triangle - triangulate - trigonal - angel light

In Lists: Shapes, more...

Synonyms: three-cornered, three-sided, triagonal, deltoid, delta-shaped, more...

🗣️Forum discussions with the word(s) "triangular" in the title:

A term for plucking guitar strings with both a triangular pick and fingers
a triangular piece of land _____ Fifth Avenue and Broadway
triangle or triangular or triangularly
triangular in shape or triangular shaped?
triangular wooden frame

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⇱ triangular - WordReference.com Dictionary of English

triangular