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bluestone

(Encyclopedia) bluestone, common name for the blue, crystalline heptahydrate of cupric sulfate called chalcanthite, a minor ore of copper. It also refers to a fine-grained, light to dark colored blue…

brown recluse spider

(Encyclopedia) brown recluse spider or violin spider, poisonous nocturnal spider, Loxoceles reclusa, most common in the SE and S central United States. Adults are 3&fslsh;8 in. (10 mm) long and…

ahimsa

(Encyclopedia) ahimsaahimsaəhĭmˈsä [key] [Sanskrit,=noninjury], ethical principle of noninjury to both men and animals, common to Buddhism, Jainism, and Hinduism. Ahimsa became influential in India…

Blackheath

(Encyclopedia) Blackheath, common, 267 acres (108 hectares) in Lewisham and Greenwich boroughs, London, England. It was the gathering place of highwaymen and of several martial groups, including the…

Tizard, Sir Henry Thomas

(Encyclopedia) Tizard, Sir Henry Thomas, 1885–1959, English physical chemist and scientific adviser. He was educated at Westminster school and Magdalen College, Oxford, from which he received honors…

superstition

(Encyclopedia) superstition, an irrational belief or practice resulting from ignorance or fear of the unknown. The validity of superstitions is based on belief in the power of magic and witchcraft…

trill

(Encyclopedia) trill, in music, ornament consisting of the more or less rapid alternation of two adjacent notes. Indicated by any of several conventional symbols, it varies in speed and duration and…

barberry

(Encyclopedia) CE5 Barberry, Berberis vulgaris barberrybarberrybärˈbĕrˌē [key], common name for the family Berberidaceae, and specifically for the spiny barberries (Berberis species). The family…

riot, rout, and unlawful assembly

(Encyclopedia) riot, rout, and unlawful assembly, in law, varying degrees of concerted disturbance of the peace. At common law, an unlawful assembly is a gathering of at least three persons whose…

sagebrush

(Encyclopedia) sagebrush, name for several species of Artemisia, deciduous shrubs of the family Asteraceae (aster family), particularly abundant in arid regions of W North America. The common…