metamorphism

metamorphism
a) The process by which rocks are changed into other forms by the application of heat and/or pressure.
b) The process by which insects development through life stages as, for example, those of embryo, larva, pupa and imago. The life cycle of the butterfly is one of complete metamorphosis, in which the embryo grows within the egg, hatches into the larval stage caterpillar, enters the pupal stage within its chrysalis, and finally emerges as an adult butterfly imago.

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  • Metamorphism — Met a*mor phism, n. (Geol.) The state or quality of being metamorphic; the process by which the material of rock masses has been more or less recrystallized by heat, pressure, etc., as in the change of sedimentary limestone to marble. Murchison.… …   The Collaborative International Dictionary of English

  • metamorphism — (n.) 1837, from METAMORPHIC (Cf. metamorphic) + ISM (Cf. ism) …   Etymology dictionary

  • metamorphism — [met΄əmôr′fiz΄əm] n. 1. METAMORPHOSIS 2. change in the mineralogical, structural, or textural composition of rocks under pressure, heat, chemical action, etc., which turns limestone into marble, granite into gneiss, etc …   English World dictionary

  • Metamorphism — For other uses, see Metamorphism (disambiguation). Schematic representation of a metamorphic reaction. Abbreviations of minerals: act = actinolite; chl = chlorite; ep = epidote; gt = garnet; hbl = hornblende; plag = plagioclase. Two minerals… …   Wikipedia

  • metamorphism — /met euh mawr fiz euhm/, n. 1. Geol. a change in the structure or constitution of a rock due to natural agencies, as pressure and heat, esp. when the rock becomes harder and more completely crystalline. 2. Archaic. metamorphosis. [1835 45; META + …   Universalium

  • metamorphism — GLOSSARY OF VOLCANIC TERMS In the stricktest sense (isochemical metamorphism), the process by which consolidated rocks undergo textural and mineralogical changes brought about by changes in temperature and/or pressure. The textural and/or… …   Glossary of volcanic terms

  • metamorphism — metamorfizmas statusas T sritis chemija apibrėžtis Uolienų struktūros, tekstūros, cheminės ir mineralinės sudėties kitimas daugiausia dėl temperatūros ir slėgio poveikio. atitikmenys: angl. metamorphism rus. метаморфизм …   Chemijos terminų aiškinamasis žodynas

  • metamorphism — metamorphic ► ADJECTIVE ▪ (of rock) having undergone transformation by heat, pressure, or other natural agencies. DERIVATIVES metamorphism noun …   English terms dictionary

  • metamorphism — noun Date: 1845 a change in the constitution of rock; specifically a pronounced change effected by pressure, heat, and water that results in a more compact and more highly crystalline condition …   New Collegiate Dictionary

  • metamorphism — metÉ™ mÉ”rfɪzm n. metamorphosis; change in form or structure due to natural agencies (Geology) …   English contemporary dictionary

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