— olivinic /ol'euh vin"ik/ , olivinitic /ol'euh vi nit"ik/ , adj.
/ol"euh veen', ol'euh veen"/ , n.
Mineral. any of a group of magnesium iron silicates, (Mg,Fe) 2 SiO 4 , occurring in olive-green to gray-green masses as an important constituent of basic igneous rocks. Also called chrysolite .
[ 1785-95; Olivin, equiv. to Olive OLIVE + -in -INE 2 ]