Sphe"noid (?), a. [Gr. &?;&?;&?;;
sfh`n a wedge + e'i^dos form: cf. F.
sphénoïde.] 1. Wedge-shaped;
as, a sphenoid crystal.
2. (Anat.) Of or pertaining to the
sphenoid bone.
Sphenoid bone (Anat.), an irregularly
shaped bone in front of the occipital in the base of the skull of the
higher vertebrates. It is composed of several fetal bones which become
united the adult. See Alisphenoid, Basisphenoid,
Orbitosphenoid, Presphenoid.
Sphe"noid (?), n. 1.
(Crystallog.) A wedge-shaped crystal bounded by four equal
isosceles triangles. It is the hemihedral form of a square
pyramid.
2. (Anat.) The sphenoid bone.
Sphe"noid (?), a. [Gr. &?;&?;&?;;
sfh`n a wedge + e'i^dos form: cf. F.
sphénoïde.] 1. Wedge-shaped;
as, a sphenoid crystal.
2. (Anat.) Of or pertaining to the
sphenoid bone.
Sphenoid bone (Anat.), an irregularly
shaped bone in front of the occipital in the base of the skull of the
higher vertebrates. It is composed of several fetal bones which become
united the adult. See Alisphenoid, Basisphenoid,
Orbitosphenoid, Presphenoid.
Sphe"noid (?), n. 1.
(Crystallog.) A wedge-shaped crystal bounded by four equal
isosceles triangles. It is the hemihedral form of a square
pyramid.
2. (Anat.) The sphenoid bone.
