ros+, _skleros_, hard.] A membrane of the eye.

SE-BA'CEOUS. [L., _sebum_, tallow.] Pertaining to fat; unctuous
matter.

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 +s+, sigma.

SI-LI'CI-UM. A term applied to one of the earths.

SI'NUS. [L., a bay.] A cavity, the interior of which is more expanded
than the entrance.

SKEL'E-TON. [Gr. +skello+, _skello_, to dry.] The aggregate of the
hard parts of the body; the bones.

SO'DI-UM. The metallic base of soda

SPHINC'TER. [Gr. +sphingo+, _sphingo_, to restrict.] A muscle that
contracts or shuts an orifice.

SPI'NAL CORD. A prolongation of the brain.

SPI-NA'LIS. Relating to the spine.

SPINE. A thorn. The vertebral column; back-bone.

SPI'NOUS. Belonging to the spinal column.

SPLEEN. The milt. It is situated in the abdomen, and attached to the
stomach.

SPLEN'IC. Relating to the spleen.

SPLE'NI-US. The name of a muscle of the neck.

STA'PES. The name of one of the small bones of the ear.

STER'NUM. The breast-bone. The bone that forms the front of the chest
from the neck to the stomach.

STOM'ACH. The principal organ of the digestive apparatus.

STRA'TUM. [L. _sterno_, to stew.] A bed; a layer.

STY'LOID. [L. _stylus_, a pencil.] An epithet applied to processes
that resemble a style, a pen.

SUB-CLA'VI-AN. [L. _sub_, under, and _clavis_, a key.] Situated under
the clavicle.

SUB-LI'MIS. High in place.

SUB-LIN'GUAL. [L. _sub_, under, and _lingua_, the tongue.] Situated
under the tongue.

SUB-MAX'IL-LA-RY. [L. _sub_, under, and _maxilla_, the jaw-bone.]
Located under the jaw.

SUL'PHUR. A simple, mineral substance, of a yellow color, brittle,
insoluble in water, but fusible by heat.

SU-PE-RI-O'RIS. A term applied to certain muscles.

SU-PI-NA'TOR. [L