Cris´sum, n. Properly, the under tail-coverts collectively. Oftener used to designate the circumanal plumage. (66.)
Cro´taphyte (depression). A concavity on the outside of the skull on each side behind, filled with muscle; temporal fossa.
Crown, n. Pileus; top of head, especially the vertex.
Cru´cial, Cru´ciform, a. In the shape of a cross. The crucial test is one experimentally conclusive.
Cruræ´us, n. Name of a certain muscle of the thigh.
Cru´ral, a. Pertaining to the crus, or shin.
Crus, n. The shin; segment of the leg between the thigh and ankle, represented by the tibia.
Crys´talline (lens), a. See Lens.
Cu´bit, n. The forearm.
Cu´bital, a. Pertaining to the forearm.