Octahedron

noun

noun ·4 syllables ·Rare ·Advanced level

Definitions

Noun
  1. 1
    a polyhedron with eight faces; the regular octahedron has regular triangles as faces and is one of the Platonic solids.
  2. 2
    any polyhedron having eight plane faces wordnet

Synonyms

All synonyms
eightfigureoctaveoctettriangle

Example

More examples

"These have forms such as the cube, octahedron, etc., which belong to the isometric system, and it is in this system that the Diamond crystallizes."

Etymology

From Ancient Greek ὀκτάεδρον (oktáedron). By surface analysis, octa- + -hedron.

Related phrases

stellated octahedrontruncated octahedronplatonic solid

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.