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Webster's 1913 Dictionary

RHOMBOHEDRON

Rhom `bo *he "dron, n. Etym: [NL. , fr. Gr. (Geom. & Crystallog.)

 

Defn: A solid contained by six rhomboids; a parallelopiped.

 

New American Oxford Dictionary

rhombohedron

rhom bo he dron |ˌrämbōˈhēdrən ˌrɑmboʊˈhidrən | ▶noun ( pl. rhombohedrons or rhombohedra |-drə | ) a solid figure whose faces are six equal rhombuses. • a crystal or other solid object of this form. ORIGIN mid 19th cent.: from rhombus + -hedron, on the pattern of words such as polyhedron .

 

Oxford Dictionary

rhombohedron

rhombohedron |ˌrɒmbə (ʊ )ˈhiːdr (ə )n, -ˈhɛd -| ▶noun ( pl. rhombohedra |-drə | or rhombohedrons ) a solid figure whose faces are six equal rhombuses. • a rhombohedral crystal or other solid object. ORIGIN mid 19th cent.: from rhombus + -hedron, on the pattern of words such as polyhedron .