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Webster 1913 Edition

Adj.

[Pref.

para-

sphenoid

(Anat.)

Near the sphenoid bone; – applied especially to a bone situated immediately beneath the sphenoid in the base of the skull in many animals.

–

Noun.

The parasphenoid bone.

parasphenoid ‎(plural parasphenoids)

(anatomy) A bone situated immediately beneath the sphenoid in the base of the skull in many vertebrates.