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copperhead

(Encyclopedia)copperhead, poisonous snake, Ancistrodon contortrix, of the E United States. Like its close relative, the water moccasin, the copperhead is a member of the pit viper family and detects its warm-bloode...

Constantine I, king of Greece

(Encyclopedia)Constantine I, 1868–1923, king of the Hellenes, eldest son of George I, whom he succeeded in 1913. Married to Sophia, sister of the German emperor William II, he opposed the pro-Allied policy of the...

fiduciary

(Encyclopedia)fiduciary fĭdo͞oˈshēĕˌrē [key], in law, a person who is obliged to discharge faithfully a responsibility of trust toward another. Among the common fiduciary relationships are guardian to ward, ...

Hastings, city, England

(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) marine esplana...

half-life

(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 given quantity of th...

Andronicus I

(Encyclopedia)Andronicus I (Andronicus Comnenus) ăndrənīˈkəs kŏmnēˈnəs [key], 1120?–1185, Byzantine emperor (1183–85), nephew of John II. He acceded to the throne by strangling his cousin Alexius II. T...

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...

jatropha

(Encyclopedia)jatropha jăˈtrəfə [key], any plant of a widely distributed genus (Japtropha) of perennial herbs, shrubs, and trees in the family Euphorbiaceae (spurge family), native to tropical areas of the West...

John of Austria, 1545–78, Spanish admiral and general

(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, Philip II of...

nosebleed

(Encyclopedia)nosebleed, nasal hemorrhage occurring as the result of local injury or disturbance. Most nosebleeds are not serious and occur when one of the small veins of the septum (the partition between the nostr...