(Encyclopedia) episomeepisomeĕpˈĭsōm [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…
(Encyclopedia) Green, Thomas Hill, 1836–82, English idealist philosopher. Educated at Oxford, he was associated with the university all his life. He was professor of moral philosophy there from 1878…
(Encyclopedia) ultimatumultimatumŭlˌtĭmāˈtəm [key], in international law, final, definitive terms submitted by one disputant nation to the other for immediate acceptance or rejection. Since refusal…
(Encyclopedia) jatrophajatrophajăˈtrəfə [key], any plant of a widely distributed genus (Japtropha) of perennial herbs, shrubs, and trees in the family Euphorbiaceae (spurge family), native to…
(Encyclopedia) Allais, Maurice Félix CharlesAllais, Maurice Félix Charlesmôrēsˈ shärl älĕˈ [key], 1911–2010, French economist, Ph.D. Univ. of Paris, 1949. After working in the French mine…
(Encyclopedia) Andronicus I (Andronicus Comnenus)Andronicus Iăndrənīˈkəs kŏmnēˈnəs [key], 1120?–1185, Byzantine emperor (1183–85), nephew of John II. He acceded to the throne by strangling his cousin…
(Encyclopedia) half-life, measure of the average lifetime of a radioactive substance (see radioactivity) or an unstable subatomic particle. One half-life is the time required for one half of any…
(Encyclopedia) Hastings, city and district, East Sussex, SE England. A resort and residential city, Hastings is backed by cliffs and has a 3-mi (4.8-km…
(Encyclopedia) John of Austria, 1545–78, Spanish admiral and general; illegitimate son of Holy Roman Emperor Charles V. He was acknowledged in his father's will and was recognized by his half-brother…
(Encyclopedia) specific heat, ratio of the heat capacity of a substance to the heat capacity of a reference substance, usually water. Heat capacity is the amount of heat needed to change the…
