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blasting

(Encyclopedia)blasting, shattering, breaking, or splitting of rock or other material by the discharge of an explosive placed within or in contact with it. It is a necessary part of many engineering operations. An a...

Escherichia coli

(Encyclopedia)Escherichia coli ĕshˌərĭkˈēə kōˈlī [key], common bacterium that normally inhabits the intestinal tracts of humans and animals, but can cause infection in other parts of the body, especially ...

bearing

(Encyclopedia)bearing, machine part designed to reduce friction between moving parts or to support moving loads. There are two main kinds of bearings: the antifriction type, such as the roller bearing and the ball ...

assault

(Encyclopedia)assault, in law, an attempt or threat, going beyond mere words, to use violence, with the intent and the apparent ability to do harm to another. If violent contact actually occurs, the offense of batt...

Ascham, Roger

(Encyclopedia)Ascham, Roger ăsˈkəm [key], 1515–68, English humanist and scholar, b. Yorkshire. Ascham was a major intellectual figure of the early Tudor period. His Toxophilus (1545), an essay on archery, prov...

Kwakiutl

(Encyclopedia)Kwakiutl kwäˈkēo͞oˌtəl [key], group of closely related Native North Americans who inhabit N Vancouver Island and the adjacent mainland of British Columbia, Canada. They, together with the Nootka...

Weinreich, Uriel

(Encyclopedia)Weinreich, Uriel, 1926–67, Polish-American linguist, b. Vilnius, Poland (now in Lithuania), Ph.D. Columbia Univ., 1951. Weinreich taught linguistics at Columbia (1951–67) and is noted for his cont...

scabies

(Encyclopedia)scabies skāˈbēz [key], highly contagious parasitic skin disease caused by the itch mite (Sarcoptes scabiei). The disease is also known as itch. It is acquired through close contact with an infested...

magic, in religion and superstition

(Encyclopedia)magic, in religion and superstition, the practice of manipulating and controlling the course of nature by preternatural means. Magic is based upon the belief that the universe is populated by unseen f...

porcupine, in zoology

(Encyclopedia)porcupine, member of either of two rodent families, characterized by having some of its hairs modified as bristles, spines, or quills. The quills are loosely attached to the porcupines' skin and pull ...