trihedron

American

[trahy-hee-druhn] / traɪˈhi drən /

noun

Geometry.

PLURAL

trihedrons, trihedra

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

Etymology

Origin of trihedron

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

By contrast, Irene Worth is marvelously regal as Jocasta, especially in one memorable scene of horror as she impales herself on a trihedron as if to mortify her treacherous womb.

From Time Magazine Archive

I have been laughing over my 'trihedron.'

From Project Gutenberg

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