trigonometry

[ trig-uh-nom-i-tree ]

noun

1. 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.

trigonometry

/ ˌtrɪɡəˈnɒmɪtrɪ; ˌtrɪɡənəˈmɛtrɪk /

noun

1. 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 trig

trigonometry

/ trĭg′ə-nŏm′ĭ-trē /

1. The study of the properties and uses of trigonometric functions.

Derived Forms

• ˌtrigonoˈmetrically, adverb
• trigonometric, adjective

Other Words From

• trig·o·no·met·ric [trig-, uh, -n, uh, -, me, -trik], 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

Word History and Origins

Origin of trigonometry¹

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

Word History and Origins

Origin of trigonometry¹

C17: from New Latin trigōnometria from Greek trigōnon triangle

Example Sentences

Luis Guillorme uses the late moments of a tense game to break out the gutsiest piece of infield trigonometry you’ll see this season.

From FiveThirtyEight

Less than 2 percent of respondents said that they use trigonometry in their daily life, but over 70 percent of them said that they never use it.

From Freakonomics

I would think calculus would get used more than trigonometry and geometry, although that would be hard if only 2 percent are using it.

From Freakonomics

Take a case in Trigonometry—a Complement is what remains after subtracting an angle from one right-angle.

From Project Gutenberg

He left school at sixteen, after having mastered geometry and trigonometry, and having learned to use logarithms.

From Project Gutenberg

Who by an accurate Trigonometry and furniture of Instruments, hath inriched, as well geometry, as Astronomy.

From Project Gutenberg

Is it a good thing to let a boy use a surveying instrument unless he first learns trigonometry?

From Project Gutenberg

In point of fact, let us proceed to "trace a curve," as we say in the differential and integral trigonometry.

From Project Gutenberg

Related Words

• algebra
• calculation
• calculus
• geometry
• math