| 单词 | spinel |
| 释义 | spinel n. 1. any of a group of hard crystalline minerals of various colours, consisting chiefly of oxides of magnesium and aluminium. 2. any substance of similar composition or properties. Phrases and idioms spinel ruby a deep-red variety of spinel used as a gem. Etymology: F spinelle f. It. spinella, dimin. of spina: see SPINE |
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