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La Fontaine, Jean de

(Encyclopedia)La Fontaine, Jean de zhäN də [key], 1621–95, French poet, whose celebrated fables place him among the masters of world literature. He was born at Château-Thierry to a bourgeois family. A restless...

utilitarianism

(Encyclopedia)utilitarianism yo͞oˌtĭlĭtrˈēənĭzəm, yo͞otĭˌ– [key], in ethics, the theory that the rightness or wrongness of an action is determined by its usefulness in bringing about the most happines...

Read, Sir Herbert

(Encyclopedia)Read, Sir Herbert, 1893–1968, English poet and critic. His studies at the Univ. of Leeds were interrupted by World War I, in which he served with a Yorkshire regiment. After the war he completed his...

statistics

(Encyclopedia)statistics, science of collecting and classifying a group of facts according to their relative number and determining certain values that represent characteristics of the group. The most familiar stat...

digital-to-analog conversion

(Encyclopedia)digital-to-analog or D/A conversion, the process of changing discrete digital data into a continuously varying signal in relation to a standard or reference. There are two types of converters: electro...

Derby, Elias Hasket

(Encyclopedia)Derby, Elias Hasket dûrˈbē [key], 1739–99, American merchant, b. Salem, Mass. He inherited the considerable wealth and maritime business that his father, Richard Derby (1712–83), also of Salem,...

Dollier de Casson, François

(Encyclopedia)Dollier de Casson, François fräNswäˈ dôlyāˈ də käsôNˈ [key], 1636–1701, priest and explorer in Canada, b. near Nantes, France. In 1657 he entered the seminary of Saint-Sulpice, Paris, and...

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...

episome

(Encyclopedia)episome ĕpˈĭsōm [key], unit of genetic material composed of a series of genes that sometimes has an independent existence in a host cell and at other times is integrated into a chromosome of the c...

needle

(Encyclopedia)needle, implement of metal or other material used to carry the thread in sewing and in various forms of needlework and manufacturing. The earliest needles were merely awls or punches. Stone, bone, ivo...