calcium tungstate, CaWO 4 , usually occurring in tetragonal crystals: an important ore of tungsten.
a white, brownish, or greenish mineral, usually fluorescent, consisting of calcium tungstate in tetragonal crystalline form with some tungsten often replaced by molybdenum: occurs principally in contact metamorphic rocks and quartz veins, and is an important source of tungsten and purified calcium tungstate. Formula: CaWO4
noun 1. any of various tropical trees or shrubs belonging to the genus Schefflera, of the ginseng family, having glossy, palmately compound leaves and often cultivated as a houseplant. 2. a similar, related plant, Brassaia actinophylla.
[shuh-her-uh-zah-duh, -zahd, -heer-] /ʃəˌhɛr əˈzɑ də, -ˈzɑd, -ˌhɪər-/ noun 1. (in The Arabian Nights’ Entertainments) the wife of the sultan of India, who relates such interesting tales nightly that the sultan spares her life. 2. (italics) a symphonic suite (1888) by Nikolai Rimski-Korsakov. noun the female narrator of Arabian Nights, who saves her life by […]
noun 1. a river in W Europe, flowing from N France through W Belgium and SW Netherlands into the North Sea. 270 miles (435 km) long. noun 1. a river in W Europe, rising in NE France and flowing north and northeast through W Belgium to Antwerp, then northwest to the North Sea in the […]
noun 1. Friedrich Wilhelm Joseph von [free-drikh vil-helm yoh-zef fuh n] /ˈfri drɪx ˈvɪl hɛlm ˈyoʊ zɛf fən/ (Show IPA), 1775–1854, German philosopher. noun 1. Friedrich Wilhelm Joseph von (ˈfriːdrɪç ˈvɪlhɛlm ˈjoːzɛf fɔn). 1775–1854, German philosopher. He expanded Fichte’s idea that there is one reality, the infinite and absolute Ego, by regarding nature as an […]