[pahy-rok-seen, puh-, pahy-rok-seen] /paɪˈrɒk sin, pə-, ˈpaɪ rɒkˌsin/
any of a very common group of minerals of many varieties, silicates of magnesium, iron, calcium, and other elements, occurring as important constituents of many kinds of rocks, especially basic igneous rocks.
any of a group of silicate minerals having the general formula ABSi2O6, where A is usually calcium, sodium, magnesium, or iron, and B is usually magnesium, iron, chromium, manganese, or aluminium. Pyroxenes occur in basic igneous rocks and some metamorphic rocks, and have colours ranging from white to dark green or black. They may be monoclinic (clinopyroxenes) or orthorhombic (orthopyroxenes) in crystal structure. Examples are augite (the most important pyroxene), diopside, enstatite, hypersthene, and jadeite
Any of a series of dark silicate minerals having the general chemical formula ABSi2O6, where A is either calcium (Ca), sodium (Na), magnesium (Mg), or iron (Fe), and B is either magnesium, iron, chromium (Cr), manganese (Mn), or aluminum (Al). Pyroxenes vary in color from white to dark green or black and are characterized by a rectangular-shaped cross section. They can be either monoclinic or orthorhombic and occur in igneous and metamorphic rocks. The minerals enstatite, diopside, and augite are pyroxenes.
[pahy-rok-suh-nahyt, puh-] /paɪˈrɒk səˌnaɪt, pə-/ noun, Petrology. 1. any rock composed essentially, or in large part, of of any kind. /paɪˈrɒksɪˌnaɪt/ noun 1. a very dark coarse-grained ultrabasic rock consisting entirely of pyroxene minerals
[pahy-rok-suh-lin, puh-] /paɪˈrɒk sə lɪn, pə-/ noun 1. a nitrocellulose compound containing fewer nitrate groups than guncotton, used in the manufacture of artificial silk, leather, oilcloth, etc. /paɪˈrɒksɪlɪn/ noun 1. a yellow substance obtained by nitrating cellulose with a mixture of nitric and sulphuric acids; guncotton: used to make collodion, plastics, lacquers, and adhesives pyroxylin […]
[pir-ik] /ˈpɪr ɪk/ Prosody adjective 1. consisting of two short or unaccented syllables. 2. composed of or pertaining to pyrrhics. noun 3. Also called dibrach. a pyrrhic foot. [pir-ik] /ˈpɪr ɪk/ noun 1. an ancient Greek warlike dance in which the motions of actual warfare were imitated. adjective 2. of, relating to, or denoting this […]
noun 1. a victory or goal achieved at too great a cost. noun 1. a victory in which the victor’s losses are as great as those of the defeated Also called Cadmean victory Pyrrhic victory [(peer-ik)] A victory that is accompanied by enormous losses and leaves the winners in as desperate shape as if they […]