heavy+spar
31Barium — Ba ri*um, n. [NL., fr. Gr. bary s heavy.] (Chem.) One of the elements, belonging to the alkaline earth group; a metal having a silver white color, and melting at a very high temperature. It is difficult to obtain the pure metal, from the facility …
32Barytes — Ba*ry tes, n. [Gr. bary s heavy: cf. Gr. bary ths heaviness, F. baryte.] (Min.) Barium sulphate, generally called {heavy spar} or {barite}. See {Barite}. [1913 Webster] …
33barytum — Barium Ba ri*um, n. [NL., fr. Gr. bary s heavy.] (Chem.) One of the elements, belonging to the alkaline earth group; a metal having a silver white color, and melting at a very high temperature. It is difficult to obtain the pure metal, from the… …
34alkaline-earth metal — /al keuh luyn errth , lin /, Chem. any of the group of bivalent metals including barium, radium, strontium, calcium, and, usually, magnesium, the hydroxides of which are alkalis but less soluble than those of the alkali metals. [1900 05] * * * ▪… …
35barium — /bair ee euhm, bar /, n. Chem. a whitish, malleable, active, divalent, metallic element, occurring in combination chiefly as barite or as witherite. Symbol: Ba; at. wt.: 137.34; at. no.: 56; sp. gr.: 3.5 at 20°C. [1800 10; BAR(YTES) + IUM] * * *… …
36luminescence — luminescent, adj. /looh meuh nes euhns/, n. 1. the emission of light not caused by incandescence and occurring at a temperature below that of incandescent bodies. 2. the light produced by such an emission. [1885 90; < L lumin (see LUMEN) +… …
37Patagonia — Patagonian, adj., n. /pat euh goh nee euh, gohn yeuh/, n. 1. a tableland region of southern Argentina. 2. a region in S South America, in S Argentina and S Chile, extending from the Andes to the Atlantic. * * * Semiarid scrub plateau, southern… …
38Glencross — GLENCROSS, or Glencorse, a parish, in the county of Edinburgh, 2½ miles (N. by E.) from Penicuick; containing 708 inhabitants. This parish, which consists of portions severed from the parishes of Lasswade and Penicuick, in 1616, derives its… …
39Barite — Ba rite, n. (Min.) Native sulphate of barium, a mineral occurring in transparent, colorless, white to yellow crystals (generally tabular), also in granular form, and in compact massive forms resembling marble. It has a high specific gravity, and… …
40Cawk — (k[add]k), n. [Prov. E. cauk limestone. A doublet of chalk.] (Min.) An opaque, compact variety of barite, or heavy spar. [Also written {cauk}.] [1913 Webster] …
