trig·o·nom·e·try

(trĭg′ə-nŏm′ĭ-trē)

The branch of mathematics that deals with the relationships between the sides and the angles of triangles and the calculations based on them, particularly the trigonometric functions.

[New Latin trigōnometria : Greek trigōnon, triangle; see trigon + Greek -metriā, -metry.]

trig′o·no·met′ric (-nə-mĕt′rĭk), trig′o·no·met′ri·cal (-rĭ-kəl) adj.

trig′o·no·met′ri·cal·ly adv.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

trigonometry

(ˌtrɪɡəˈnɒmɪtrɪ)

(Mathematics) 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

[C17: from New Latin trigōnometria from Greek trigōnon triangle]

trigonometric, ˌtrigonoˈmetrical adj

ˌtrigonoˈmetrically adv

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

trig•o•nom•e•try

(ˌtrɪg əˈnɒm ɪ tri)

n.

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.

[1605–15; < New Latin trigōnometria; see trigon, -o-, -metry]

trig`o•no•met′ric (-nəˈmɛ trɪk) trig`o•no•met′ri•cal, adj.

trig`o•no•met′ri•cal•ly, adv.

trig·o·nom·e·try

(trĭg′ə-nŏm′ĭ-trē)

The study of the properties and uses of trigonometric functions.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

trigonometry

the branch of mathematics that treats the measurement of and relationships between the sides and angles of plane triangles and the solid figures derived from them. — trigonometric, trigonometrical, adj.

trigonometry

[ˌtrɪgəˈnɒmɪtrɪ] N → trigonometría f

Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

trigonometry

[ˌtrɪgəˈnɒmətri] n → trigonométrie f

Collins English/French Electronic Resource. © HarperCollins Publishers 2005

trigonometry

n → Trigonometrie f

Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

trigonometry

[ˌtrɪgəˈnɒmɪtrɪ] n → trigonometria

Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

Mentioned in

References in classic literature

This was something new and very interesting, and he felt that it was of greater import than trigonometry, which he never could understand.

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I worked off a year's trigonometry that summer, and began Virgil alone.

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In the alchemy of his brain, trigonometry and mathematics and the whole field of knowledge which they betokened were transmuted into so much landscape.

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'"EDUCATION.--At Mr Wackford Squeers's Academy, Dotheboys Hall, at the delightful village of Dotheboys, near Greta Bridge in Yorkshire, Youth are boarded, clothed, booked, furnished with pocket-money, provided with all necessaries, instructed in all languages living and dead, mathematics, orthography, geometry, astronomy, trigonometry, the use of the globes, algebra, single stick (if required), writing, arithmetic, fortification, and every other branch of classical literature.

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"'When my old tutor used to give me an exercise in trigonometry, it always took the shape of measuring heights.

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He was the first to apply trigonometry, which he did not invent, to someone else's idea, using data he did not compile."

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And until we put teaching our youngsters to be kind, decent, hard-working members of society at the heart of our education system, we are really wasting our time with all that trigonometry stuff.

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In another career, as a lecturer in mechanics at the university level, I have encountered a number of students whose basic geometry and trigonometry skills were woefully inadequate because they had been rushed through those courses in high school so that they could "move on" to calculus.

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