I. adjective or ~al Etymology: New Latin ~es, from Greek sphēnoeidēs wedge-shaped, from sphēn wedge Date: 1732 of, relating to, or being a winged compound bone of the base of the cranium, having a wedged shape, II. noun Date: 1828 a ~ bone
SPHENOID
Meaning of SPHENOID in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012