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
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To trigonometry
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
Cite This Source
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
Cite This Source
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.
Cite This Source
Example sentences
He invented tools for computation, navigation and surveying, and devised the trigonometry concepts of cosine and cotangent.
Remembering her fun in working with trigonometry, she realizes that she needs to adjust the length of the pendulum.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature