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streamline

(Encyclopedia) streamline, path of a fluid flowing steadily and without appreciable turbulence. A body is said to be streamlined if its shape offers the least possible resistance to a current of air…

Speusippus

(Encyclopedia) SpeusippusSpeusippusspy&oomacr;sĭpˈəs [key], fl. 347–339 b.c., Greek philosopher; disciple and nephew of Plato, whom he succeeded as head of the Academy. Speusippus distinguished…

shape memory

(Encyclopedia) shape memory, property possessed by certain alloys that allows them to return, when heated, to their original shape after having been deformed. This effect results because, as the…

Lichnowsky, Karl Max, Fürst von

(Encyclopedia) Lichnowsky, Karl Max, Fürst vonLichnowsky, Karl Max, Fürst vonkärl mäks fürst fən lĭkhnôfˈskē [key], 1860–1928, German diplomat, ambassador to London (1912–14). In a privately…

hydrocephalus

(Encyclopedia) hydrocephalushydrocephalushīˌdrəsĕfˈələs [key], also known as water on the brain, developmental (congenital) or acquired condition in which there is an abnormal accumulation of body…

Lyons, First Council of

(Encyclopedia) Lyons, First Council ofLyons, First Council oflyôNˈ [key], 1245, 13th ecumenical council of the Roman Catholic Church, convened at Lyons, France, by Pope Innocent IV to deal with his…

Bertrada

(Encyclopedia) BertradaBertradabĕrträˈdə [key], d. 783, Frankish queen, wife of Pepin the Short and mother of Charlemagne. She tried without success to reconcile Charlemagne and his brother Carloman…

Biton and Cleobis

(Encyclopedia) BitonBitonbīˈtŏn [key] and CleobisCleobisklēōˈbĭs [key], in Greek mythology, sons of the priestess Cydippe. When their mother wanted to see a famous temple of Hera, which was many…

Ferrara-Florence, Council of

(Encyclopedia) Ferrara-Florence, Council of, 1438–45, second part of the 17th ecumenical council of the Roman Catholic Church; the first part was the Council of Basel, canonically convened but after…

Bayard, Pierre Terrail, seigneur de

(Encyclopedia) Bayard, Pierre Terrail, seigneur deBayard, Pierre Terrail, seigneur debāˈərd; pyĕr tĕrīˈyə sānyörˈ də bäyärˈ [key], c.1474–1524, French military hero, called le chevalier sans peur et…