s.] Belonging or
} relating to the lungs.
PUL-MO-NA'LIS. }

PU'PIL. A little aperture in the centre of the iris, through which the
rays of light pass to the retina.

PY-LOR'IC. Pertaining to the pylorus.

PY-LOR'US. [Gr. +puloros+, _puloros_, a gate keeper.] The lower
orifice of the stomach, with which the duodenum connects.

RA'DI-US. [L., a ray, a spoke of a wheel.] The name of one of the
bones of the forearm.

RA-DI-A'LIS. Radial; belonging to the radius.

RA'DI-ATE. Having lines or fibres that diverge from a point.

RA'MUS. [L.] A branch. A term applied to the projections of bones.

REC-RE-MEN-TI'TIAL. [L. _re_, again, and _cerno_, to secrete.]
Consisting of superfluous matter separated from that which is
valuable.

REC'TUM. The third and last portion of the intestines.

REC'TUS, -I. [L.] Straight; erect. A term applied to several muscles.

RE-SID'U-AL. Pertaining to waste matter.

RE-SID'U-UM. [L.] Waste matter. The faeces.

RES-PI-RA'TION. [L. _re_, again, and _spiro_, to breathe.] The act of
breathing. Inspiring air into the lungs and expelling it again.

RE-SPI'RA-TO-RY. Pertaining to respiration; serving for respiration.

RET'I-NA. [L., _rete_, a net.] The essential organ of sight. One of
the coats of the eye, formed by the expansion of the optic nerve.

RO-TUN'DUM, -A. [L.] Round; circular.

RU'GA, -AE. [L.] A wrinkle; a fold.

SAC'CU-LUS. [L., dim. of _saccus_, a bag.] A little sac.

SA'CRAL. Pertaining to the sacrum.

SA'CRUM. [L., sacred.] The bone which forms the posterior part of the
pelvis, and is a continuation of the spinal column.

SA-LI'VA. [L.] The fluid which is secreted by the salivary glands,
which moistens the food and mouth.

SAL'I-VA-RY. That which belongs to the saliva.

SAN'GUIN-E-OUS. [L. _sanguis_, the blood.] Bloody; abounding with
blood; plethoric.

SAR-TO'RI-US. [L. _sartor_, a tailor.] A term applied to a muscle of
the thigh.

SCA'LA, -AE. [L., a ladder.] Cavities of the cochlea.

SCA-LE'NUS. [Gr. +skalenos+, _skalenos_, unequal.] A term applied to
some muscles of the neck.

SCAPH'OID. [Gr. +skaphe+, _skaphe_, a little boat.] The name applied
to one of the wrist-bones.

SCAP'U-LA. [L.] The shoulder-blade.

SCAP'U-LAR. Relating to the scapula.

SCARF-SKIN. The outer, thin integument of the body; the cuticle.

SCI-AT'IC. [Gr., pertaining to the loins.] The name of the large nerve
of the loins and leg.

SCLE-ROT'IC. [Gr. +skle