noun
: a series of isomorphous mineral oxides (Mg,Fe,Zn,Mn)Al 2 O 4 in the spinel group consisting of spinel, hercynite, gahnite, and galaxite
noun
: a series of isomorphous mineral oxides (Mg,Fe,Zn,Mn)Al 2 O 4 in the spinel group consisting of spinel, hercynite, gahnite, and galaxite
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012