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servomechanism

(Encyclopedia)servomechanism, automatic device for the control of a large power output by means of a small power input or for maintaining correct operating conditions in a mechanism. It is a type of feedback contro...

galactosemia

(Encyclopedia)galactosemia gəlăkˌtəsēˈmēə [key], inherited metabolic disorder caused by an enzyme deficiency and transmitted as a recessive trait; it results in the accumulation of the sugar galactose in th...

abdomen

(Encyclopedia)abdomen, in humans and other vertebrates, portion of the trunk between the diaphragm and lower pelvis. In humans the wall of the abdomen is a muscular structure covered by fascia, fat, and skin. The a...

family leave

(Encyclopedia)family leave, social policy permitting workers to take a specified amount of time off from the job to attend to pressing family needs. The U.S. Family and Medical Leave Act (1993) attempts to balance ...

Zacharias

(Encyclopedia)Zacharias [Gr. from Heb. Zechariah] or Zachary [Eng. from Heb.]. 1 Priest to whom an angel appeared and foretold the birth of his son, John the Baptist. Luke 1.5–80. He and Elizabeth, his wife, are ...

Camp Fire Boys and Girls

(Encyclopedia)Camp Fire Boys and Girls, American organization for boys and girls from birth to age 21, originally the Camp Fire Girls, for girls 6 to 18 years old. It was founded (1910) by Luther Halsey Gulick (186...

mammary gland

(Encyclopedia)mammary gland, organ of the female mammal that produces and secretes milk for the nourishment of the young. A mammal may have from 1 to 11 pairs of mammary glands, depending on the species. Generally,...

heir

(Encyclopedia)heir, person designated by law to succeed to the ownership of property of another if that owner does not make a contrary disposition of it by will. A person who takes property left to him by will is n...

era

(Encyclopedia)era, period of historic time. In geology, it is the name applied to large divisions of geological process, e.g., Paleozoic era (see geology). In chronology an era is a period reckoned from a fixed poi...

Leto

(Encyclopedia)Leto lēˈtō [key], in Greek mythology, daughter of the Titans Coeus and Phoebe and mother of Artemis and Apollo. When she conceived twins by Zeus, Hera sent the serpent Python after her and forbade ...