| Definition of 'sphenoid bone' |
Princeton's WordNet |
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1. (noun) sphenoid bone, sphenoid, os sphenoidale
butterfly-shaped bone at the base of the skull
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| Definition of 'sphenoid bone' |
U.S. National Library of Medicine |
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1. sphenoid bone
An irregular unpaired bone situated at the SKULL BASE and wedged between the frontal, temporal, and occipital bones (FRONTAL BONE; TEMPORAL BONE; OCCIPITAL BONE). Sphenoid bone consists of a median body and three pairs of processes resembling a bat with spread wings. The body is hollowed out in its inferior to form two large cavities (SPHENOID SINUS).
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Definitions of sphenoid bone 
