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gigabyte a unit of electronic storage capacity or memory equal to 1,073,741,824 bytes or approximately one billion bytes. (abbr.: G or GB)
gigahertz a unit of frequency equal to one billion hertz. (abbr.: GHz)
gigantic exceptionally big; huge, as a giant.
gigantism abnormal growth of the whole body or parts of the body, usu. due to dysfunction of the pituitary gland.
gigaton a unit of power used in measuring the force of nuclear weapons, equal to the explosive force of a billion tons of TNT.
gigawatt a unit of power equal to one billion watts.
giggle to laugh in a lighthearted, silly, or nervous way with short, convulsive sounds. [2 definitions]
gigolo a man who receives money from a usu. wealthy woman in exchange for his sexual favors and companionship.
gigot a leg of mutton, lamb, veal, or the like.
Gila monster a large poisonous lizard of the southwestern United States and northwestern Mexico, with a stubby tail and scaly rings of black and orange, yellow, or pink covering its skin.
Gila River a U.S. river flowing west from southwestern New Mexico through Arizona to the southwest corner of the state, where it joins with the Colorado River.
Gila River Relocation Center a U.S. internment camp located on the Gila River Indian Reservation that was built for the internment of Japanese-Americans during World War II. At its peak, there were over 13,000 people forcibly living there.
gild to cover or coat with gold. [2 definitions]
Gilded Age in U.S. history, the post-Civil War era, characterized by rapid industrialization, economic expansion, and widespread corruption in business and government.
gilding the art or process of applying gilt or a similar substance to a surface. [3 definitions]
gill1 the breathing organ of fish and other animals that live in water, consisting of a platelike, saclike, or feathery protrusion. [5 definitions]
gill2 in the US, a unit of capacity equal to one fourth of a pint, four fluid ounces, or 118.3 milliliters. [2 definitions]
gill fungus a fleshy fungus with blade-shaped gills on the underside of its cap; mushroom.
gill net a net set upright in the water in order to catch fish by the gills.
gillyflower any of a number of plants bearing fragrant flowers, such as the wallflower or carnation.
gilt1 a past tense and past participle of gild. [4 definitions]