TRIANGLE

triangle

(noun) a percussion instrument consisting of a metal bar bent in the shape of an open triangle

triangle

(noun) any of various triangular drafting instruments used to draw straight lines at specified angles

Triangulum, Triangle

(noun) a small northern constellation near Perseus between Andromeda and Aries

triangle, trigon, trilateral

(noun) a three-sided polygon

triangle

(noun) something approximating the shape of a triangle; “the coastline of Chile and Argentina and Brazil forms two legs of a triangle”

Source: WordNet® 3.1


Etymology

Noun

triangle (plural triangles)

(geometry) A polygon with three sides and three angles.

(US, Canada) A set square.

(music) 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.

(cue sports) A triangular piece of equipment used for gathering the balls into the formation required by the game being played.

A love triangle.

(systemics) The structure of systems composed with three interrelated objects.

A draughtsman's square in the form of a right-angled triangle.

(historical) A frame formed of three poles stuck in the ground and united at the top, to which people were bound when undergoing corporal punishment.

Any of various large papilionid butterflies of the genus Graphium.

Synonym: bluebottle

(rail) A triangular formation of railway tracks, with a curve on at least one side.

Synonym: wye

Synonyms

• (polygon): threeside, trigon (rare)

• (love triangle): love triangle, menage à trois

• See also triangle

Anagrams

• INTEGRAL, alerting, altering, integral, relating, tanglier, teraglin

Proper noun

Triangle

The area comprising the cities of Raleigh, Durham and Chapel Hill in North Carolina. Used with "the" except when attributive.

Ellipsis of Bermuda Triangle.

Anagrams

• INTEGRAL, alerting, altering, integral, relating, tanglier, teraglin

Source: Wiktionary


Tri"an`gle, n. Etym: [L. triangulum, fr. triangulus triangular; tri- (see Tri-) + angulus angle: cf. F. triangle. See Angle a corner.]

1. (Geom.)

Definition: A figure bounded by three lines, and containing three angles.

Note: A triangle is either plane, spherical, or curvilinear, according as its sides are straight lines, or arcs of great circles of a sphere, or any curved lines whatever. A plane triangle is designated as scalene, isosceles, or equilateral, according as it has no two sides equal, two sides equal, or all sides equal; and also as right-angled, or oblique-angled, according as it has one right angle, or none; and oblique-angled triangle is either acute-angled, or obtuse-angled, according as all the angles are acute, or one of them obtuse. The terms scalene, isosceles, equilateral, right-angled, acute-angled, and obtuse-angled, are applied to spherical triangles in the same sense as to plane triangles.

2. (Mus.)

Definition: An instrument of percussion, usually made of a rod of steel, bent into the form of a triangle, open at one angle, and sounded by being struck with a small metallic rod.

3. A draughtsman's square in the form of a right-angled triangle.

4. (Mus.)

Definition: A kind of frame formed of three poles stuck in the ground and united at the top, to which soldiers were bound when undergoing corporal punishment, -- now disused.

5. (Astron.) (a) A small constellation situated between Aries and Andromeda. (b) A small constellation near the South Pole, containing three bright stars. Triangle spider (Zoöl.), a small American spider (Hyptiotes Americanus) of the family Ciniflonidæ, living among the dead branches of evergreen trees. It constructs a triangular web, or net, usually composed of four radii crossed by a double elastic fiber. The spider holds the thread at the apex of the web and stretches it tight, but lets go and springs the net when an insect comes in contact with it.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

25 November 2024

ONCHOCERCIASIS

(noun) infestation with slender threadlike roundworms (filaria) deposited under the skin by the bite of black fleas; when the eyes are involved it can result in blindness; common in Africa and tropical America


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