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Tombaugh, Clyde William

(Encyclopedia)Tombaugh, Clyde William tŏmˈbô [key], 1906–97, American astronomer, b. Streator, Ill. Although lacking formal training or a college degree, he was hired in 1929 as an assistant by the Lowell Obse...

umbilical cord

(Encyclopedia)umbilical cord ŭmbĭlˈĭkəl [key], cordlike structure about 22 in. (56 cm) long in the pregnant human female, extending from the abdominal wall of the fetus to the placenta. Its chief function is t...

Robert II, king of Scotland

(Encyclopedia)Robert II, 1316–90, king of Scotland (1371–90), nephew and successor of David II. He was the first sovereign of the house of Stuart, or Stewart (see Stuart, family), which eventually succeeded to ...

Van Vechten, Carl

(Encyclopedia)Van Vechten, Carl văn vĕkˈtən [key], 1880–1964, American music critic, novelist, and photographer, b. Cedar Rapids, Iowa, grad. Univ. of Chicago, 1903. While he was a leading music and dance cri...

stuttering

(Encyclopedia)stuttering or stammering, speech disorder marked by hesitation and inability to enunciate consonants without spasmodic repetition. Known technically as dysphemia, it has sometimes been attributed to a...

Székely

(Encyclopedia)Székely sāˈkəlē [key], ethnic group of Transylvania and of present-day Romania. Except in a few isolated communities, where the ancient customs of the Székely have survived, there is little diff...

Agent Orange

(Encyclopedia)Agent Orange, herbicide used by U.S. forces during the Vietnam War to expose enemy guerrilla forces in forested areas. Agent Orange contains varying amounts of dioxin. Exposure to the defoliant has be...

Breton literature

(Encyclopedia)Breton literature brĕtˈən [key], in the Celtic language of Brittany. Although there are numerous allusions in other literatures of the 12th to 14th cent. to the “matter of Brittany,” which incl...

McMahon, Brien

(Encyclopedia)McMahon, Brien (James O'Brien McMahon), 1903–52, American statesman, b. Norwalk, Conn. After practicing law, he became a judge in Norwalk, and from 1933 to 1936 he served in the office of the U.S. A...

Ascoli Piceno

(Encyclopedia)Ascoli Piceno äˈskōlē pēchĕˈnō [key], city, capital of Ascoli Piceno prov., Marche region, central Italy, at the confluence of the Castellano and Tronto rivers. It...