pentahedron

1. 1.

   any polyhedron having five plane faces

   Broaderpolyhedron

Other forms of pentahedron

plural

pentahedra

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 pentahedron

What does pentahedron mean?

pentahedron means "any polyhedron having five plane faces".

How many syllables are in pentahedron?

pentahedron has 4 syllables: pen-ta-he-dron. The stress falls on "ta".

Is pentahedron a common word?

pentahedron 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.