SI derived unit
Any of the units of measure derived from combinations of the seven base units and two supplementary units of the International System. See Table at measurement.
noun 1. Also called chalybite. a common mineral, iron carbonate, FeCO 3 , usually occurring in yellowish to deep-brown cleavable masses: a minor ore of iron. 2. a meteorite consisting almost entirely of metallic minerals. noun 1. Also called chalybite. a pale yellow to brownish-black mineral consisting chiefly of iron carbonate in hexagonal crystalline form. […]
noun, Astronomy. 1. year (def 4c). sidereal year noun 1. See year (sense 5)
noun 1. the act or process of surrounding and attacking a fortified place in such a way as to isolate it from help and supplies, for the purpose of lessening the resistance of the defenders and thereby making capture possible. 2. any prolonged or persistent effort to overcome resistance. 3. a series of illnesses, troubles, […]
noun 1. (in the Nibelungenlied) the wife of Sigmund and mother of Siegfried.