trisoctahedron

(redirected from Triakis octahedron)
Also found in: Wikipedia.
click for a larger image
trisoctahedron

tris·oc·ta·he·dron

 (trĭs-ŏk′tə-hē′drən)
n. pl. tris·oc·ta·he·drons or tris·oc·ta·he·dra (-drə)
A solid figure having 24 equal faces, every three of which correspond to one face of an octahedron.

[Greek tris, thrice; see trei- in Indo-European roots + octahedron.]

tris·oc′ta·he′dral (-drəl) adj.

trisoctahedron

(trɪsˌɒktəˈhiːdrən)
n, pl -drons or -dra (-drə)
(Mathematics) a solid figure having 24 identical triangular faces, groups of three faces being formed on an underlying octahedron
[C19: from Greek tris three times + octahedron]
trisˌoctaˈhedral adj

tris•oc•ta•he•dron

(trɪsˌɒk təˈhi drən)

n., pl. -drons, -dra (-drə).
a solid bounded by 24 identical faces in groups of three, each group corresponding to one face of an octahedron.
[1840–50; < Greek trís thrice + octahedron]
tris•oc`ta•he′dral, adj.