(Encyclopedia) poliomyelitispoliomyelitispōˌlēōmīˌəlīˈtĭs [key], polio, or infantile paralysis, acute viral infection, mainly of children but also affecting older persons. Historically, there were…
(Encyclopedia) neutrinoneutrinon&oomacr;trēˈnō [key] [Ital.,=little neutral (particle)], elementary particle with no electric charge and a very small mass emitted during the decay of certain…
(Encyclopedia) tuna or tunny, game and food fishes, the largest members of the family Scombridae (mackerel family) and closely related to the albacore and bonito. They have streamlined bodies with…
(Encyclopedia) poker, card game, believed to have originated in Asia and first played in the United States in the 19th cent. A traditional cutthroat gambling game at first, it is now also an…
(Encyclopedia) vasectomy, male sterilization by surgical excision of the vas deferens, the thin duct that carries sperm cells from the testicles to the prostate and the penis. Vasectomy is a popular…
(Encyclopedia) Natives, South American, aboriginal peoples of South America. In the land mass extending from the Isthmus of Panama to Tierra del Fuego, Native American civilizations developed long…
(Encyclopedia) alien, in law, any person residing in one political community while owing allegiance to another. A procedure known as naturalization permits aliens to become citizens.
Each nation…
(Encyclopedia) incinerator, furnace for burning refuse. The older and simpler kind of incinerator was a brick-lined cell with a metal grate over a lower ash pit, with one opening in the top or side…
(Encyclopedia) JagataiJagataijăgətīˈ [key], d. 1242, Mongol conqueror; son of Jenghiz Khan. He led large armies on his father's campaigns of conquest. When the empire was divided in 1227 among…
(Encyclopedia) bee moth,&sp;greater wax moth, or honeycomb moth, common name for an insect pest of honeycombs. Bee moths do damage during their larval stages, injuring combs and honey. The moth…
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