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tetrahedron

Pronunciation: /ˌtɛtrəˈhiːdrən, -ˈhɛd-/
Definition of tetrahedron

noun (plural tetrahedra /-drə/ or tetrahedrons)

  • a solid having four plane triangular faces; a triangular pyramid.

Derivatives

tetrahedral

adjective

Origin:

late 16th century: from late Greek tetraedron, neuter (used as a noun) of tetraedros 'four-sided'

tetrahedron in other Oxford dictionaries

Definition of tetrahedron in the US English dictionary

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