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llama

(Encyclopedia) llamallamaläˈmə [key], South American domesticated ruminant mammal, Lama glama, of the camel family. Genetic studies indicate that it is descended from the guanaco. Smaller than the…

McEnroe, John Patrick, Jr.

(Encyclopedia) McEnroe, John Patrick, Jr.McEnroe, John Patrick, Jr.măkˈənrōˌ [key], 1959–, American tennis player, b. Weisbaden, West Germany. He grew up in Douglaston, Queens, N.Y. After winning the…

narcolepsy

(Encyclopedia) narcolepsy, a sleep disorder characterized by excessive daytime sleepiness and recurring unwanted episodes of sleep (“sleep attacks”). People with narcolepsy may abruptly fall asleep…

mainstreaming

(Encyclopedia) mainstreaming, in education, practice of teaching handicapped children in regular classrooms with nonhandicapped children to the fullest extent possible; such children may have…

mountain beaver

(Encyclopedia) mountain beaver, stout, short-limbed North American rodent, Aplodontia rufa, not closely related to the true beaver. Also called sewellel beaver after the Chinook word for a robe made…

contact lens

(Encyclopedia) contact lens, thin plastic lens worn between the eye and eyelid that may be used instead of eyeglasses. Actors, models, and others wear them for appearance, and athletes use them for…

verdict

(Encyclopedia) verdict, in law, official decision of a jury respecting questions of fact that the judge has laid before it. In the United States, verdicts must be unanimous in federal courts;…

videodisc

(Encyclopedia) videodisc or videodisk, disk used with a special player and television to reproduce both pictures and sound. A videodisc player cannot record television programs off the air for later…

adrenocorticotropic hormone

(Encyclopedia) adrenocorticotropic hormoneadrenocorticotropic hormoneədrēˈnōkôrˌtəkōtrŏpˈĭk [key], polypeptide hormone secreted by the anterior pituitary gland. Its chief function is to stimulate the…

valine

(Encyclopedia) CE5 valinevalinevălˈēn [key], organic compound, one of the 22 α-amino acids commonly found in animal proteins. Only the l-stereoisomer appears in mammalian protein. It is one of…