Se-cre´tion. The act of secerning; the act of producing from the blood substances different front the blood itself, as bile, saliva. The matter secreted, as mucus, bile, &c.

Se-cre´to-ry. Performing the office of secretion.

Se-cun´dus. Second. A term applied to certain muscles.

Sem-i-cir´cu-lar. Having the form of a half circle. The name of a part of the ear.

Sem-i-ten-di-no´sus. [L. semi, half and tendo, a tendon.] The name of a muscle.

Sep´tum. [L.] A membrane that divides two cavities from each other.

Se´rous. Thin; watery. Pertaining to serum.

Se´rum. [L.] The thin, transparent part of blood.

Ser-ra´tus. [L. serro, to saw.] A term applied to some muscles of the trunk.

Sig´moid. [Gr.] Resembling the Greek σ, sigma.