A symbiotic relationship in which one species (the parasite) benefits at the expense of the other (the host). Cf.:mutualism, commensalism, symbiosis, metabiosis.
- multiple p. a condition in which parasites of different species parasitize a single host, in contrast to superparasitism (2) or hyperparasitism.

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par·a·sit·ism 'par-ə-sə-.tiz-əm, -.sīt-.iz- n
1) an intimate association between organisms of two or more kinds esp one in which a parasite obtains benefits from a host which it usu. injures

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par·a·sit·ism (par″ə-siґtiz-əm) 1. symbiosis in which one population (or individual) adversely affects the other, but cannot live without it. 2. infection or infestation with parasites.

Medical dictionary. 2011.

Look at other dictionaries:

  • Parasitism — Par a*si tism (p[a^]r [.a]*s[imac] t[i^]z m; 277), n. [Cf. F. parasitisme.] [1913 Webster] 1. The state or behavior of a parasite; the act of a parasite. Court parasitism. Milton. [1913 Webster] 2. (Bot. & Zo[ o]l.) The state of being parasitic.… …   The Collaborative International Dictionary of English

  • parasitism — (n.) 1610s, from PARASITE (Cf. parasite) + ISM (Cf. ism). Biological sense is from 1853 …   Etymology dictionary

  • parasitism — [par′ə sīt΄iz΄əm] n. 1. the state or condition of being a parasite 2. the habits of a parasite 3. in the U.S.S.R., the state of being unemployed 4. Biol. a symbiotic association of two kinds of organisms in which the parasite is benefited and the …   English World dictionary

  • Parasitism — This article is about relationship between organisms. For other uses, see Parasite (disambiguation). Brood parasitism is a form of parasitism Parasitism is a type of symbiotic relationship between organisms of different species where one organism …   Wikipedia

  • parasitism — /par euh suy tiz euhm, si /, n. 1. Biol. a relation between organisms in which one lives as a parasite on another. 2. a parasitic mode of life or existence. 3. Pathol. a diseased condition due to parasites. 4. (in some totalitarian countries) a.… …   Universalium

  • parasitism — noun a) Interaction between two organisms, in which one organism (the parasite) benefits and the other (the host) is harmed. We accused her of parasitism in taking his hard earned money for new dresses. b) A similar interaction between people …   Wiktionary

  • parasitism — parazitizmas statusas T sritis ekologija ir aplinkotyra apibrėžtis Organizmų biotinių tarpusavio santykių forma, kai vienos rūšies ar populiacijos organizmai (parazitai) naudojasi kitos rūšies organizmais (maitintojais) kaip gyvenamąja aplinka ir …   Ekologijos terminų aiškinamasis žodynas

  • parasitism — parazitizmas statusas T sritis augalininkystė apibrėžtis Organizmo (parazito) gyvenimo būdas, naudojantis kitu organizmu (šeimininku) kaip gyvenamąja aplinka ir maisto šaltiniu. atitikmenys: angl. parasitism rus. паразитизм …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • parasitism — parasite ► NOUN 1) an organism which lives in or on another organism and benefits at the other s expense. 2) derogatory a person who lives off or exploits others. DERIVATIVES parasitism noun parasitology noun. ORIGIN Greek parasitos person eating …   English terms dictionary

  • parasitism — noun Date: circa 1611 1. the behavior of a parasite 2. an intimate association between organisms of two or more kinds; especially one in which a parasite obtains benefits from a host which it usually injures 3. parasitosis …   New Collegiate Dictionary

  • parasitism — the manner of life in which an organism lives for some period of time, to its own benefit, in or on another organism (the host) to the host s detriment, e.g. Ichthyomyzon on Esox masquiniongy; Vandellia in the gill cavity of Platystoma …   Dictionary of ichthyology

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