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part
(redirected from petrous part of temporal bone)

   Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson 0.37 sec.
part (pahrt) a division of a larger structure.
mastoid part of temporal bone  mastoid bone; the irregular, posterior part of the temporal bone.
petromastoid part of temporal bone  see petrous p. of temporal bone.
petrous part of temporal bone  petrous bone; the part of the temporal bone at the base of the cranium, containing the inner ear. Some divide it into two subparts, calling the posterior section the mastoid part, reserving the term petrous part for the anterior section only, and calling the entire area the petromastoid part.
squamous part of temporal bone  squamous bone; the flat, scalelike, anterior superior portion of the temporal bone.
tympanic part of temporal bone  tympanic bone; the part of the temporal bone forming the anterior and inferior walls and part of the posterior wall of the external acoustic meatus.

part (pärt)
n.
1. A portion, division, piece, or segment of a whole.
2. Any of several equal portions or fractions that can constitute a whole or into which a whole can be divided.
3. An organ, member, or other division of an organism.
4. An anatomical part; pars.
5. parts The external genitalia.

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