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temporal bone

noun Anatomy, Zoology.

either of a pair of thick compound bones forming the part of the skull that encases the inner ear.

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bad to the bone
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What is the difference between archaic and obsolete words?
The meaning of these temporal labels can be somewhat different among dictionaries and thesauri. The label archaic is used for words that were once common but are now rare. Archaic implies having the character or characteristics of a much earlier time. Obsolete indicates that a term is no longer in active use, except, for example, in literary quotation. Obsolete may apply to a word regarded as no longer acceptable or useful even though …
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Origin of temporal bone

First recorded in 1765–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for temporal bone

temporal bone

noun

either of two compound bones forming part of the sides and base of the skull: they surround the organs of hearing
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medicine definitions for temporal bone

temporal bone

n.

Either of a pair of compound bones forming the sides and base of the skull.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.