tetrahedron

1. 1.

   any polyhedron having four plane faces

   Broaderpolyhedron

Other forms of tetrahedron

plural

tetrahedra

Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.

Questions about tetrahedron

What does tetrahedron mean?

tetrahedron means "any polyhedron having four plane faces".

How many syllables are in tetrahedron?

tetrahedron has 4 syllables: tet-ra-he-dron. The stress falls on "he". In IPA it is /ˌtɛtɹəˈhidɹən/.

Is tetrahedron a common word?

tetrahedron is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.