- 1. a. Like stone; hard; stony; rocky; as, the petrous part of the temporal bone. Source: opted
- 2. a. Same as Petrosal. Source: opted
- 3. adj. (of bone especially the temporal bone) resembling stone in hardness Source: wordnet
- 4. 1. Like stone; hard; stony; rocky; as, the petrous part of the temporal bone. Hooper. 2. (Anat.) Same as Petrosal. Source: webster
- 5. j:100 s. (of bone especially the temporal bone) resembling stone in hardness Source: ecdict
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