单词 | petrous |
释义 | pet·rous ![]() adj. 1. Of, relating to, or resembling rock, especially in hardness; stony. 2. Of or relating to the very dense, hard portion of the temporal bone that forms a protective case for the inner ear. [Middle English, from Old French petros, from Latin petrōsus, rocky, from petra, rock, from Greek petrā; see per-2 in the Appendix of Indo-European roots.] |
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