ALL meanings of spinel
spi·nel
S s - noun spinel any of a group of minerals composed principally of oxides of magnesium, aluminum, iron, manganese, chromium, etc., characterized by their hardness and octahedral crystals. 1
- noun spinel a mineral of this group, essentially magnesium aluminate, MgAl 2 O 4 , some varieties being used as gems. 1
- noun spinel any of a group of hard glassy minerals of variable colour consisting of oxides of aluminium, magnesium, chromium, iron, zinc, or manganese and occurring in the form of octahedral crystals: used as gemstones 0
- noun spinel a hard, glassy mineral composed of magnesium-aluminium oxide found in metamorphosed limestones and many basic and ultrabasic igneous rocks. Formula: MgAl2O4 0
- noun spinel a variously colored, crystalline mineral, MgAlO4, used as a gem; magnesium aluminum oxide 0