Is “Orthopyroxene” a Scrabble word?
Yes
ORTHOPYROXENE
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 Orthopyroxene
/ˌɔːθə(ʊ)paɪˈɹɒksiːn/
noun
1.Any pyroxene that forms orthorhombic crystals.