regular octahedron

1. 1.

   an octahedron with eight equilateral triangles as faces

   Broaderregular polyhedron

Questions about regular octahedron

What does regular octahedron mean?

regular octahedron means "an octahedron with eight equilateral triangles as faces".

Is regular octahedron a common word?

regular octahedron 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.