## octahedron

oc·ta·he·dron *pl.* -·drons or -·dra

a solid figure with eight plane surfaces

Origin of octahedron

Classical Greek*oktaedron*, neuter of

*oktaedros:*see octa- and amp; -hedron

## octahedron

noun

*pl.*

**oc·ta·he·drons**or

**oc·ta·he·dra**

A polyhedron with eight faces.

Origin of octahedron

Greek*oktaedron*, from neuter of

*oktaedros*,

*having eight sides*:

*okta-*,

*octo-*+

*-edros*,

*sided*; see

**–hedron**.

**octahedron**

## octahedron

Noun

(*plural* octahedra *or* octahedrons)

- (geometry) a polyhedron with eight faces; the regular octahedron has regular triangles as faces and is one of the Platonic solids.

Origin

From Ancient Greek *á½€ÎºÏ„ÏŽ* (oktÅ, “eight") + *á¼•Î´ÏÎ±* (hedra, “seat").