| 词汇 | convex |
| 词根词缀 | 词源： 1570s, from M.Fr. convexe, from L. convexus "vaulted, arched," pp. of convehere "to bring together," from com- "together" + vehere "to bring" (see vehicle). Possibly from the idea of vaults carried together to meet at the point of a roof. Related: Convexity (c.1600). Convex lens is from 1822. |
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