Ganglion (Gr. γάγγλιν, a knot). A knot-like swelling in a nerve; a smaller nerve center.
Gastric (Gr. γαστήρ, stomach). Pertaining to the stomach.
Gelatine (Lat. gelo, to congeal). An animal substance which dissolves in hot water and forms a jelly on cooling.
Germ (Lat. germen, a sprout, bud). Disease germ; a name applied to certain tiny bacterial organisms which have been demonstrated to be the cause of disease.
Germicide (Germ, and Lat. caedere, to kill). Any agent which has a destructive action upon living germs, especially bacteria.
Gland (Lat. glans, an acorn). An organ consisting of follicles and ducts, with numerous blood-vessels interwoven.
Glottis (Gr. γλόττα, the tongue). The narrow opening between the vocal cords.
Glucose. A kind of sugar found in fruits, also known as grape sugar.
Gluten. The glutinous albuminoid ingredient of cereals.
Glycogen. Literally, “producing glucose.” Animal starch found in liver, which may be changed into glucose.