Oscar, born 1941, Costa Rican politician: president 1986–90: Nobel Peace Prize 1987.
Oscar. born 1940, Costa Rican statesman; president (1986–90, 2006–2010); Nobel peace prize 1987
- Arias-stella phenomenon
arias-stella phenomenon Arias-Stella phenomenon A·ri·as-Stel·la phenomenon (ä’rē-ä-stěl’ə, är’yä-stě’yä) n. Focal, unusual, decidual changes in endometrial epithelium that consist of intraluminal budding, nuclear enlargement, and hyperchromatism with cytoplastic swelling and vacuolation. Also called Arias-Stella reaction.
- Arias-stella reaction
arias-stella reaction Arias-Stella reaction n. See Arias-Stella phenomenon.
ariboflavinosis ariboflavinosis a·ri·bo·fla·vin·o·sis (ā-rī’bō-flā’və-nō’sĭs) n. A condition caused by a riboflavin deficiency, characterized by chilosis or angular stomatitis and a magenta-colored tongue. Also called hyporiboflavinosis.
a seaport in N Chile. See under . a maritime region in W South America: long in dispute between Chile and Peru; annexed by Chile 1883; divided as a result of arbitration 1929 into a Peruvian department (Tac·na) and a Chilean department (Arica) Historical Examples The rankling question of Tacna and Arica has been at […]