noun the branch of mathematics that deals with the relations between the sides and angles of plane or spherical triangles, and the calculations based on them. Origin of trigonometry 1605–15;
New Latin trigōnometria;
-metry Related forms trig·o·no·met·ric , [trig- uh-n uh- me-trik] /ˌtrɪg ə nəˈmɛ trɪk/ trig·o·no·met·ri·cal, adjective trig·o·no·met·ri·cal·ly, adverb non·trig·o·no·met·ric, adjective non·trig·o·no·met·ri·cal, adjective non·trig·o·no·met·ri·cal·ly, adverb un·trig·o·no·met·ric, adjective un·trig·o·no·met·ri·cal, adjective un·trig·o·no·met·ri·cal·ly, adverb
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for trigonometry Historical Examples of trigonometry
It signifies an enormous number of things, from pot-hooks to
This is not because the details of
trigonometry are all needed in physics.
I worked off a year's
trigonometry that summer, and began Virgil alone.
They found them deficient in
trigonometry and canned them off the team.
I never saw him but during a fortnight, when I took it into my head to do
trigonometry. British Dictionary definitions for trigonometry noun the branch of mathematics concerned with the properties of trigonometric functions and their application to the determination of the angles and sides of triangles. Used in surveying, navigation, etc Abbreviation: trig Derived Forms trigonometric ( ˌtrɪɡənəˈmɛtrɪk) or trigonometrical, adjective trigonometrically, adverb Word Origin for trigonometry
C17: from New Latin
trigōnometria from Greek trigōnon triangle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for trigonometry n.
"branch of mathematics that deals with relations between sides and angles of triangles," 1610s, from Modern Latin
trigonometria (Barthelemi Pitiscus, 1595), from Greek trigonon "triangle" (from tri- "three," see tri-, + gonia "angle," see knee (n.)) + metron "a measure" (see meter (n.2)).
Online Etymology Dictionary, © 2010 Douglas Harper
The study of the properties and uses of trigonometric functions.
The American Heritage® Science Dictionary
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