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gloxinia any of several tropical houseplants with large downy leaves and bell-shaped flowers of various colors.
glucose a form of sugar that occurs naturally in fruits, plants, and animal tissues; grape sugar. [2 definitions]
glucoside any of several chemical compounds that yield glucose when treated with an acid or enzyme.
glue a thick, sticky liquid used as an adhesive, such as the substance derived from hoofs, skins, and other animal proteins by boiling these in water. [2 definitions]
glue sniffing the potentially brain-damaging act or practice of inhaling the fumes of certain types of glue, such as model airplane glue, and thereby becoming intoxicated, giddy, or the like.
gluey like glue; sticky. [2 definitions]
glum in low spirits; sad, sullen, or gloomy. [2 definitions]
glume one of two bracts on a spikelet of grass or sedge.
gluon in physics theory, a massless particle or type of energy that binds quarks together and thus forms protons, neutrons, and the like.
glut to supply (a market) with much more of a particular article than there is demand for. [5 definitions]
glutamate a salt or ester of glutamic acid.
glutamic acid an amino acid used esp. as a salt flavoring on meats and other foods.
gluten a tough, elastic protein substance that occurs in cereal grains and flours, esp. wheat and corn, and makes dough sticky.
gluteus any of the three major muscles in the buttocks.
glutinous sticky, as glue.
glutton someone who eats an excessive amount, or one who both eats and drinks excessively. [2 definitions]
gluttonous inclined to eat excessively; voracious.
gluttony the habit or an instance of excessive eating and drinking.
glyceride an ester of glycerol that is the main component of fatty tissue.
glycerin a sweet colorless or yellowish syrupy alcohol; glycerol.
glycerol a sweet colorless or yellowish syrupy alcohol derived from fats or oils, used as a sweetener, solvent, and antifreeze, and in the making of soap, cosmetics, medicines, and explosives.