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space medicine

(Encyclopedia)space medicine, study of the medical and biological effects of space travel on living organisms. The principal aim is to discover how well and for how long humans can withstand the extreme conditions ...

Cocteau, Jean

(Encyclopedia)Cocteau, Jean zhäN kôktōˈ [key], 1889–1963, French writer, visual artist, and filmmaker. He experimented audaciously in almost every artistic medium, becoming a leader of the French avant-garde ...

chigoe

(Encyclopedia)chigoe chĭgˈō [key] or jigger, small parasitic flea (Tunga penetrans) of the tropics and subtropics, including the S United States. Humans and their domestic animals are the main hosts. The fertili...

globulin

(Encyclopedia)globulin, any of a large family of proteins of a spherical or globular shape that are widely distributed throughout the plant and animal kingdoms. Many of them have been prepared in pure crystalline f...

Galen

(Encyclopedia)Galen gāˈlən [key], c.130–c.200, physician and writer, b. Pergamum, of Greek parents. After study in Greece and Asia Minor and at Alexandria, he returned to Pergamum, where he served as physician...

Johnson, Uwe

(Encyclopedia)Johnson, Uwe üˈvā yônˈzôn [key], 1934–84, German novelist. Johnson's works explore the complex effects on the average German of the postwar division of their nation, both halves of which he se...

acetaminophen

(Encyclopedia)acetaminophen əsētˌəmĭnˈəfĭn [key], an analgesic and fever-reducing medicine. It is an active ingredient in many over-the-counter medicines, including Tylenol and Midol. Introduced in the earl...

López Velarde, Ramón

(Encyclopedia)López Velarde, Ramón rämōnˈ lōˈpās vālärˈᵺā [key], 1888–1921, Mexican poet. One of the major poets of Mexico, he deeply influenced the work of later poets, notably Xavier Villaurrutia....

nosebleed

(Encyclopedia)nosebleed, nasal hemorrhage occurring as the result of local injury or disturbance. Most nosebleeds are not serious and occur when one of the small veins of the septum (the partition between the nostr...

perfluoroalkyl and polyfluoroalkyl substances

(Encyclopedia)perfluoroalkyl and polyfluoroalkyl substances (PFAS), a group of several thousand synthetic organic chemical compounds made up of a chain of carbon atoms bonded to fluorine atoms. PFAS, which resist w...