PETROUS
petrous, stonelike
(adjective) (of bone especially the temporal bone) resembling stone in hardness
Source: WordNet® 3.1
Etymology
Adjective
petrous (not comparable)
Resembling rock or stone in its hardness.
(anatomy) Of the dense portion of the temporal bone that protects the inner ear.
Anagrams
• -pterous, Proteus, Puertos, Stroupe, Troupes, posture, pourest, pouters, proteus, spouter, store up, troupes
Source: Wiktionary
Pe"trous, a. Etym: [L. petrosus, fr. petra a stone.]
1. Like stone; hard; stony; rocky; as, the petrous part of the
temporal bone. Hooper.
2. (Anat.)
Definition: Same as Petrosal.
Source: Webster’s Unabridged Dictionary 1913 Edition