Is “Rhombohedron” a Scrabble word?
Yes
RHOMBOHEDRON
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Rhombohedron
noun
1.A prism with six faces, each a rhombus.