sphenoidal adjective.
[sfɪ'nɔɪd(ǝ)l] E18.[from (the same root as) prec. + -AL1.]1. Anatomy. Of or pertaining to the sphenoid bone.
E18.2. Crystallography. Of or designating an open crystal form with two non-parallel faces and an axis of two-fold symmetry.
M20. [TahlilGaran] English Dictionary ▲