trigonometric

trigonometry

[trig-uh-nom-i-tree]
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:
1605–15; < Neo-Latin trigōnometria; see trigon, -o-, -metry

trigonometric [trig-uh-nuh-me-trik] , trigonometrical, adjective
trigonometrically, adverb
nontrigonometric, adjective
nontrigonometrical, adjective
nontrigonometrically, adverb
untrigonometric, adjective
untrigonometrical, adjective
untrigonometrically, adverb
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
trigonometry (ˌtrɪɡəˈnɒmɪtrɪ)
 
n
trig 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
 
[C17: from New Latin trigōnometria from Greek trigōnon triangle]
 
trigonometric
 
adj
 
trigono'metrical
 
adj
 
trigono'metrically
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

trigonometry
"branch of mathematics that deals with relations between sides and angles of triangles," 1614, from Mod.L. trigonometria (Barthelemi Pitiscus, 1595), from Gk. trigonon "triangle" (from tri- "three" + gonia "angle;" see knee) + metron "a measure" (see meter (2)).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
trigonometry   (trĭg'ə-nŏm'ĭ-trē)  Pronunciation Key 
The study of the properties and uses of trigonometric functions.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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