noun Download 🔗Share Any of several hard minerals of cubic symmetry that are mixed oxides of magnesium and aluminium and are used as gemstones of various colours. Examples : "The jeweler showed me a beautiful ring featuring a vibrant red spinel. " mineral material geology Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share Any crystalline material, not necessarily an oxide, that possesses the same crystal structure as this mineral. Examples : "The scientist analyzed the new ceramic material and confirmed that it had a spinel structure, meaning its atoms were arranged in the same way as the magnesium aluminum oxide mineral. " material mineral chemistry geology science structure Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share Bleached yarn in making the linen tape called inkle; unwrought inkle. Examples : "The basket contained not just finished inkle tape, but also the spinel, the bleached yarn ready to be woven. " material item Chat with AIVocabulary GamePractice Reading