trihedron

American

[trahy-hee-druhn] / traɪˈhi drən /

noun

Geometry.

the figure determined by three planes meeting in a point.

trihedron British

/ traɪˈhiːdrən /

noun

a figure determined by the intersection of three planes

"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

Other Word Forms

Noun Inflected Forms

Etymology

Origin of trihedron

First recorded in 1820–30; tri- + -hedron

Example Sentences

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See Examples For:

trihedrons

So trihedrons, tetrahedrons, pentahedrons, &c., though some say, these last may end in dra, which I think improper.

From The Grammar of English Grammars by Goold Brown

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023