uent of the
red corpuscles of the blood.

Hemispheres (Gr. hemi, half, and sphaira, a sphere). Half a sphere, the
lateral halves of the cerebrum, or brain proper.

Hemorrhage (Gr. haima, blood, and hregnumi, to burst). Bleeding, or the
loss of blood.

Hepatic (Gr. he#x1F27;par, the liver). Pertaining to the liver.

Herbivorous (Lat. _herba_, an herb, and _voro_, to devour). Applied to
animals that subsist upon vegetable food.

Heredity. The predisposition or tendency derived from one's ancestors to
definite physiological actions.

Hiccough. A convulsive motion of some of the muscles used in breathing,
accompanied by a shutting of the glottis.

Hilum, sometimes written Hilus. A small fissure, notch, or depression. A
term applied to the concave part of the kidney.

Homogeneous (Gr. ho#1F41;mos, the same, and genos, kind). Of the _same
kind_ or quality throughout; uniform in nature,--the reverse of
heterogeneous.

Humor. The transparent contents of the eyeball.

Hyaline (Gr. hyalos, glass). Glass-like, resembling glass in transparency.

Hydrogen. An elementary gaseous substance, which, in combination with
oxygen, produces water.

Hydrophobia (Gr. hydor, water, and phobeomai, to fear). A disease caused
by the bite of a rabid dog or other animal.

Hygiene (Gr. hygieia health). The art of preserving health and preventing
disease.

Hyoid (Gr. letter u, and eidos, form, resemblance). The bone at the root
of the tongue, shaped like the Greek letter u.

Hypermetropia (Gr. hyper over, beyond, metron, measure, and ops, the eye).
Far-sightedness.

Hypertrophy (Gr. hyper, over, and trophe, nourishment). Excessive growth;
thickening or enlargement of any part or organ.

Incisor (Lat. _incido_, to cut). Applied to the four front teeth of both
jaws, which have sharp, cutting edges.

Incus. An anvil; the name of one of the bones of the middle ear.

Indian Hemp. The common name of _Cannabis Indica_, an intoxicating drug
known as _hasheesh_ and by other names in Eastern countries.

Inferior Vena Cava. The chief vein of the lower part of the body.

Inflammation (Lat. prefix _in_ and _flammo_, to flame). A redness or
swelling of any part of the body with heat and pain.

Insalivation (Lat. _in_ and _saliva_, the fluid of the mouth). The
mingling of the saliva with the food during the act of chewing.

Inspiration (Lat. _inspiro, spiratum_, to breathe in). The act of drawing
in the breath.

Intestine (Lat. _intu