pleomorphism

pleomorphism
/plee'euh mawr"fiz euhm/, n. Biol.
existence of an organism in two or more distinct forms during the life cycle; polymorphism.
Also, pleomorphy.
[1860-65; PLEO- + -MORPH + -ISM]

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      the existence of irregular and variant forms in the same species or strain of microorganisms, a condition analogous to polymorphism in higher organisms. Pleomorphism is particularly prevalent in certain groups of bacteria and in yeasts, rickettsias, and mycoplasmas and greatly complicates the task of identifying and studying them.

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Universalium. 2010.

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  • Pleomorphism — is the occurrence of two or more structural forms during a life cycle, especially of certain plants.It can also apply at the species level.cite web |url=http://www.mercksource.com/pp/us/cns/cns hl dorlands… …   Wikipedia

  • Pleomorphism — Ple o*mor phism, n. [Gr. ? more + morfh form.] 1. (Crystallog.) The property of crystallizing under two or more distinct fundamental forms, including dimorphism and trimorphism. [1913 Webster] 2. (Biol.) The theory that the various genera of… …   The Collaborative International Dictionary of English

  • pleomorphism — pleomorphism. См. плейоморфизм. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • pleomorphism — [plē΄ə môr′fiz΄əm] n. [ PLEO + MORPH(IC) + ISM] 1. Biol. the occurrence of two or more forms in one life cycle 2. POLYMORPHISM (sense 2) pleomorphic adj. pleomorphous [plē΄ō môr′fəs] …   English World dictionary

  • pleomorphism — SYN: polymorphism. [pleo + G. morphe, form] * * * pleo·mor·phism .plē ə mȯr .fiz əm n the quality or state of having or assuming various forms: POLYMORPHISM * * * n. the condition in which an individual assumes a number of different forms during …   Medical dictionary

  • pleomorphism — n. 1) the condition in which an individual assumes a number of different forms during its life cycle. The malarial parasite (Plasmodium) displays pleomorphism. 2) a feature of malignant neoplastic cells, which show a marked variation in the… …   The new mediacal dictionary

  • pleomorphism — pleomorfizmas statusas T sritis chemija apibrėžtis Medžiagos gebėjimas sudaryti kelių skirtingų kristalografinių sistemų kristalus. atitikmenys: angl. pleomorphism rus. плеоморфизм …   Chemijos terminų aiškinamasis žodynas

  • Pleomorphism (cytology) — Not to be confused with Pleomorphism (microbiology). A micrograph showing cells with marked nuclear shape and size variation, a component of nuclear pleomorphism. Pleomorphism is a term used in histology and cytopathology to describe variability… …   Wikipedia

  • pleomorphism — noun see pleomorphic …   New Collegiate Dictionary

  • pleomorphism — n. [Gr. pleion, more; morphe, form] 1. Polymorphism. 2. A type of polymorphism exhibited as several different stages in a life cycle …   Dictionary of invertebrate zoology

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