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histamine

(Encyclopedia) histaminehistaminehĭsˈtəmēnˌ [key], organic compound derived in the body from the amino acid histidine by the removal of a carboxyl group (COOH). Although found in many plant and…

Ross, John

(Encyclopedia) Ross, John, whose name in Cherokee is KooweskooweRoss, John,k&oomacr;ˌwĭsˌk&oomacr;wēˈ [key], 1790–1866, Native American chief, b. near Lookout Mt., Tenn., of Scottish and…

Shushkevich, Stanislav Stanislavovich

(Encyclopedia) Shushkevich, Stanislav Stanislavovich, Belarusian Stanislau Stanislavavich Shushkevich, 1934–, Belarusian political leader and scientist, first head of state of independent Belarus…

polycythemia

(Encyclopedia) polycythemiapolycythemiapŏlˌēsīthēˈmēə [key], condition characterized by an increase in the production of red blood cells, or erythrocytes, in the blood. Primary polycythemia, also…

oxalic acid

(Encyclopedia) oxalic acidoxalic acidŏksălˈĭk [key] or ethanedioic acidethanedioic acidĕthˌāndīōĭk [key], HO2CCO2H, a colorless, crystalline organic carboxylic acid that melts at 189℃ with…

Old Sarum

(Encyclopedia) Old SarumOld Sarumsârˈəm [key], site of a former city, Wiltshire, S England, just N of Salisbury (New Sarum). Excavations and scanning technologies have revealed remains of a British…

Brasília

(Encyclopedia) Brasília Brasília bräzēlˈyä [key], capital city and federal district of Brazil (2,264 sq mi/5,864 sq…

centering

(Encyclopedia) centering, the framework of wood or of wood and steel built to support a masonry arch or vault during its construction. The centering itself must be rigidly supported, either by posts…

cesarean section

(Encyclopedia) cesarean sectioncesarean sectionsĭzârˈēən [key], delivery of an infant by surgical removal from the uterus through an abdominal incision. The operation is of ancient origin: indeed,…

mastectomy

(Encyclopedia) mastectomymastectomymăstĕkˈtəmē [key], surgical removal of breast tissue, usually done as treatment for breast cancer. There are many types of mastectomy. In general, the farther the…