Columbia Encyclopedia

(Encyclopedia) Phelps, Michael Fred, 1985–, American swimmer, b. Baltimore. One of the world's greatest competitive swimmers, Phelps became (2001) the youngest world record holder (in the 200-m butterfly) at 15 an...

(Encyclopedia) baptistery băpˈtĭstrē [key], part of a church, or a separate building in connection with it, used for administering baptism. In the earliest examples it was merely a basin or pool set into the flo...

(Encyclopedia) Polykleitos, Polycletus, or Polyclitus pŏlĭklīˈtəs, –klēˈ–, –klī– [key], two Greek sculptors of the school of Argos. Polykleitos, the elder, fl. c.450–c.420 b.c., was a contemporary...

(Encyclopedia) autism ôˈtĭzəm [key], developmental disability resulting from a neurological disorder that affects the normal functioning of the brain. It is characterized by the abnormal development of communica...

(Encyclopedia) Down syndrome, congenital disorder characterized by mild to severe mental retardation, slow physical development, and characteristic physical features. Down syndrome affects about 1 in every 730 live ...

(Encyclopedia) geriatrics jĕrēăˈtrĭks [key], the branch of medicine concerned with conditions and diseases of the aged. Many disabilities in old age are caused by or related to the deterioration of the circulat...

(Encyclopedia) Lucy, Saint, d. 304?, Sicilian virgin martyr. According to legend, at an early age she vowed herself to God. She rejected a pagan suitor, who then denounced her during the persecutions under Diocletia...

(Encyclopedia) Astraea ăstrēˈə [key], in Greek religion and mythology, goddess of justice; daughter of Zeus and Themis. Because of the wickedness of man, she withdrew from the earth at the end of the Golden Age ...

(Encyclopedia) Doyle, Richard, 1824–83, English caricaturist, water colorist, and illustrator. He was the son and pupil of John Doyle, a popular caricaturist. His Journal (British Mus.), a book of sketches done at...

(Encyclopedia) child labor, use of the young as workers in factories, farms, mines, and other facilities, especially in work that is physically hazardous or morally, socially, or mentally harmful, involves a form of...