spinel

noun spi·nel \ spə-ˈnel \
variants: or spinelle

Definition of spinel

1 : a hard crystalline mineral consisting of an oxide of magnesium and aluminum that varies from colorless to ruby red to black and is used as a gem
2 : any of a group of minerals that are essentially oxides of magnesium, ferrous iron, zinc, or manganese

Recent Examples of spinel from the Web

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Origin and Etymology of spinel

Italian spinella, diminutive of spina thorn, from Latin


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