Antonyms for petrous
| Grammar : Adj |
| Spell : pe-truh s, pee- |
| Phonetic Transcription : ˈpɛ trəs, ˈpi- |
Definition of petrous
Origin :- 1540s, from Middle French petreux, from Latin petrosus "stony," from petra "rock," from Greek petra "rock, cliff, ledge, shelf of rock, rocky ridge," of uncertain origin. Possibly from PIE root *per- "to lead, pass over," if the original meaning is "bedrock" and the notion is "what one comes through to" [Watkins].
- As in rocky : adj rugged, stony
- The bones related to the organ of hearing, the tympanis and petrous bones, are very solid and dense in structure.
- Extract from : « The Cambridge Natural History, Vol X., Mammalia » by Frank Evers Beddard
- On its inner side is a small air chamber in the petrous portion of the temporal bone, called the cavity of the tympanum.
- Extract from : « A Practical Physiology » by Albert F. Blaisdell
- From the surrounding 794 mesoderm the petrous bone is formed by a process of chondrification and ossification.
- Extract from : « Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 9 » by Various
- The bony labyrinth presents a series of cavities which are channelled through the substance of the petrous bone.
- Extract from : « A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) » by Calvin Cutter
- By this means the posterior surface of the petrous bone can be exposed as far inwards as the internal auditory meatus.
- Extract from : « A System of Operative Surgery, Volume IV (of 4) » by Various
Synonyms for petrous
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