%sphenoid%

{ } a. [ L. ala wing + E. sphenoid. ] (Anat.) Pertaining to or forming the wing of the sphenoid; relating to a bone in the base of the skull, which in the adult is often consolidated with the sphenoid; as, alisphenoid bone; alisphenoid canal. [ 1913 Webster ]

n. (Anat.) The basisphenoid bone. [ 1913 Webster ]

{ } a. [ Basi- + sphenoid. ] (Anat.) Of or pertaining to that part of the base of the cranium between the basioccipital and the presphenoid, which usually ossifies separately in the embryo or in the young, and becomes a part of the sphenoid in the adult. [ 1913 Webster ]

a. [ Orbit + sphenoid. ] (Anat.) Of or pertaining to the sphenoid bone and the orbit, or to the orbitosphenoid bone. -- n. The orbitosphenoid bone, which is situated in the orbit on either side of the presphenoid. It generally forms a part of the sphenoid in the adult. [ 1913 Webster ]

a. (Anat.) Of or pertaining to the orbitosphenoid bone; orbitosphenoid. [ 1913 Webster ]

a. [ 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. -- n. The parasphenoid bone. [ 1913 Webster ]

a. [ Pref. post- + sphenoid. ] (Anat.) Of or pertaining to the posterior part of the sphenoid bone. [ 1913 Webster ]

a. (Anat.) Situated in front of the sphenoid bone; of or pertaining to the anterior part of the sphenoid bone (i. e., the presphenoid bone). [ 1913 Webster ]

Presphenoid bone (Anat.), the anterior part of the body of the sphenoid bone in front of the basisphenoid. It is usually a separate bone in the young or fetus, but becomes a part of the sphenoid in the adult. [ 1913 Webster ]

n. (Anat.) The presphenoid bone. [ 1913 Webster ]

a. (Anat.) Of or pertaining to the presphenoid bone; presphenoid. [ 1913 Webster ]

a. [ Gr. &unr_;&unr_;&unr_;; sfh`n a wedge + e'i^dos form: cf. F. sphénoïde. ] 1. Wedge-shaped; as, a sphenoid crystal. [ 1913 Webster ]

2. (Anat.) Of or pertaining to the sphenoid bone. [ 1913 Webster ]

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. [ 1913 Webster ]

n. 1. (Crystallog.) A wedge-shaped crystal bounded by four equal isosceles triangles. It is the hemihedral form of a square pyramid. [ 1913 Webster ]

2. (Anat.) The sphenoid bone. [ 1913 Webster ]

a. 1. Sphenoid. [ 1913 Webster ]

2. (Crystalloq.) Pertaining to, or resembling, a sphenoid. [ 1913 Webster ]

a. (Anat.) Situated under, or on the ventral side of, the body of the sphenoid bone. [ 1913 Webster ]

a. (Anat.) Situated above, or on the dorsal side of, the body of the sphenoid bone. [ 1913 Webster ]