# 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 of trigonometry

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

## Related Words for trigonometry

calculation, calculus, geometry, math, algebra, division, addition, multiplication, subtraction, numbers## Examples from the Web for trigonometry

### Historical Examples of trigonometry

It signifies an enormous number of things, from pot-hooks to trigonometry.

The Curse of EducationHarold E. Gorst

This is not because the details of trigonometry are all needed in physics.

College TeachingPaul Klapper

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

My AntoniaWilla Cather

They found them deficient in trigonometry and canned them off the team.

At Good Old SiwashGeorge Fitch

I never saw him but during a fortnight, when I took it into my head to do trigonometry.

Rowlandson's OxfordA. Hamilton Gibbs

## trigonometry

### noun

## 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
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Online Etymology Dictionary, © 2010 Douglas Harper

## trigonometry

[trĭg′ə-nŏm′ĭ-trē]

The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.