tropism

tropism
TROPÍSM, tropisme, s.n. Tendinţă de acomodare şi de orientare a unui organism vegetal fixat de pământ, într-o anumită direcţie, sub influenţa unei excitaţii exterioare ca lumina, căldura, gravitaţia, umiditatea etc. – Din fr. tropisme.
Trimis de claudia, 13.09.2007. Sursa: DEX '98

tropísm s. n., pl. tropísme
Trimis de siveco, 10.08.2004. Sursa: Dicţionar ortografic

TROPÍSM tropisme n. bot. Proprietate a plantelor de a creşte într-un anumit fel în funcţie de acţiunea unor factori exteriori (lumină, căldură etc.). /<fr. tropisme
Trimis de siveco, 22.08.2004. Sursa: NODEX

TROPÍSM s.n. Tendinţă de orientare, de creştere a organismelor vii, determinată de direcţia din care acţionează asupra lor anumiţi factori fizico-chimici ca lumina, căldura etc.; tropie. ♦ Proprietate a anumitor substanţe, introduse în organisme vii, de a se localiza în anumite organe ale acestora; taxie. [< fr. tropisme, cf. gr. tropos – răsucire].
Trimis de LauraGellner, 23.10.2005. Sursa: DN

TROPÍSM s. n. 1. tendinţă de orientare a organismelor vii în funcţie de un agent fizico-chimic. 2. proprietate a anumitor substanţe, introduse în organisme vii, de a se localiza în anumite organe; taxie. (< fr. tropisme)
Trimis de raduborza, 15.09.2007. Sursa: MDN

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Look at other dictionaries:

  • -tropism — [trə piz΄əm] [< TROP(E) + ISM] combining form forming nouns tropism [heliotropism] …   English World dictionary

  • tropism — [trō′piz΄əm] n. [< TROPISM] the positive, or negative, attraction of a plant or sessile animal toward, or away from, a stimulus, as in the turning of a sunflower toward the light tropistic adj …   English World dictionary

  • Tropism — Tro pism (tr[=o] p[i^]z m), n. [Gr. troph a turning, tre pein to turn + ism.] (Physiol.) Modification of the direction of growth, caused by some external influence, such as light; sometimes used for motion of an organism toward or away from an… …   The Collaborative International Dictionary of English

  • tropism — 1899, tendency of an animal or plant to turn or move in response to a stimulus, abstracted from geotropism, ult. from Gk. tropos (see TROPE (Cf. trope)) …   Etymology dictionary

  • tropism — ► NOUN Biology ▪ the turning of all or part of an organism in response to an external stimulus. ORIGIN from Greek tropos turning …   English terms dictionary

  • Tropism — A tropism (from Greek, tropos , to turn) is a biological phenomenon, indicating growth or turning movement of a biological organism, usually a plant, in response to an environmental stimulus. In tropisms, this response is dependent on the… …   Wikipedia

  • tropism — noun Etymology: International Scientific Vocabulary tropism Date: 1899 1. a. involuntary orientation by an organism or one of its parts that involves turning or curving by movement or by differential growth and is a positive or negative response… …   New Collegiate Dictionary

  • tropism — n. [Gr. tropos, turn] A movement, orientation or locomotion of a motile organism in response to a stimulus. a. Positive tropism: toward the stimulus. b. Negative tropism: away from the stimulus; see taxis …   Dictionary of invertebrate zoology

  • tropism — tropismatic /troh piz mat ik/, adj. tropistic /troh pis tik/, adj. /troh piz euhm/, n. Biol. an orientation of an organism to an external stimulus, as light, esp. by growth rather than by movement. [1895 1900; independent use of TROPISM] * * * ▪… …   Universalium

  • -tropism — trəˌpizəm, in some words .ˌtrōˌpizəm noun combining form ( s) Etymology: International Scientific Vocabulary, from trope (I) + ism : tendency to turn toward : affinity for : tropism …   Useful english dictionary

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