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rosin

(Encyclopedia)rosin or colophony, hard, brittle, translucent resin, obtained as a solid residue from crude turpentine. Usually pale yellow or amber, its color may vary from brownish-black to transparent depending o...

throne

(Encyclopedia)throne, chair of state or the seat of a high dignitary. The throne was at first a stool or bench and later became an ornate armchair, usually raised on a dais and surmounted by a canopy. Often lavishl...

Waltham

(Encyclopedia)Waltham wôlˈthăm, –thəm [key], city (1990 pop. 57,878), Middlesex co., E Mass., a suburb of Boston, on the Charles River; settled c.1634, set off from Watertown 1738, inc. as a city 1884. It is ...

carob

(Encyclopedia)carob kărˈəb [key], leguminous evergreen tree (Ceratonia siliqua) of the family Leguminosae (pulse family), native to Mediterranean regions but cultivated in other warm climates, including Florida ...

Tainan

(Encyclopedia)Tainan or T'ai-nan both: tīˈnänˈ [key], special municipality (2010 pop. 1,840,257), W central Taiwan, on the Taiwan Strait. It was created in 2010 when Tainan city was merged with Tainan co. Taina...

Sunderland

(Encyclopedia)Sunderland, city and metropolitan borough (1991 pop. 195,064), NE England, at the mouth of the Wear River. The city was established as a shipbuilding center and a coal-shipping port in the 14th cent; ...

Bursa, city, Turkey

(Encyclopedia)Bursa bo͝orsäˈ [key], city, capital of Bursa prov., NW Turkey. The market center of a rich...

chromium

(Encyclopedia)chromium krōˈmēəm [key] [Gr.,=color], metallic chemical element; symbol Cr; at. no. 24; at. wt. 51.9961; m.p. about 1,857℃; b.p. 2,672℃; sp. gr. about 7.2 at 20℃; valence +2, +3, +6. Chromiu...

quasicrystal

(Encyclopedia)quasicrystal kwāˈzīkrĭsˌtəl, kwäzˈē– [key] or quasiperiodic solid, solid body that exhibits such crystalline features as symmetry and repeating patterns of unit cells (regular arrangements ...

assaying

(Encyclopedia)assaying əsāˈyĭng, ăsˈāyĭng [key], in metallurgy, process of determining the specific metallic content of an ore, alloy, or other substance, especially one containing precious metals. It consi...