WordReference Random House Unabridged Dictionary of American English © 2020
de•man•toid (di man′toid),USA pronunciation n. [Mineral.]
- Mineralogya brilliant green variety of andradite garnet, used as a gem. Also called Uralian emerald.
- Old French diamant) + -oid -oid
- Middle High German diemant
- German, equivalent. to (obsolete) Demant diamond (
'demantoid' also found in these entries: