spinel

Meaning

  1. (countable, uncountable) Any of several hard minerals of cubic symmetry that are mixed oxides of magnesium and aluminium and are used as gemstones of various colours.
  2. (countable, uncountable) Any crystalline material, not necessarily an oxide, that possesses the same crystal structure as this mineral.

Pronounced as (IPA)
/spɪˈnɛl/
Etymology

French spinelle, perhaps from Latin spina (“a thorn, a prickle”), in allusion to its pointed crystals.

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