nyctitropism

nyctitropism
nyctitropism [nik ti′trə piz΄əm]
n.
NYCTI- + -TROPISM
the tendency of the leaves or petals of certain plants to assume a different position at night
nyctitropic [nik΄titräp′ik]
adj.

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nyc·tit·ro·pism (nĭk-tĭtʹrə-pĭz'əm) n.
The tendency of the leaves of some plants to change their position at nightfall.
  [Greek nux, nukt-, night; See nekʷ-t- in Indo-European Roots + -tropism.]   nyc'ti·troʹpic (-tĭ-trōʹpĭk, -trŏpʹĭk) adj.

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Universalium. 2010.

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Look at other dictionaries:

  • Nyctitropism — Nyc*tit ro*pism, n. [From Gr. ny x, nykto s, night + ? to turn.] (Plant Physiol.) The tendency of certain plant organs, as leaves, to assume special sleeping positions or make curvatures under the influence of darkness. It is well illustrated in… …   The Collaborative International Dictionary of English

  • nyctitropism — [nik ti′trə piz΄əm] n. [ NYCTI + TROPISM] the tendency of the leaves or petals of certain plants to assume a different position at night nyctitropic [nik΄titräp′ik] adj …   English World dictionary

  • nyctitropism — nikˈti.trəˌpizəm noun ( s) Etymology: International Scientific Vocabulary nyct + tropism : a sleep movement in plants characterized by response to a stimulus that is greatest or exclusively from one direction compare nyctinasty * * * nyctitropism …   Useful english dictionary

  • nyctitropism — nyc·tit·ro·pism …   English syllables

  • nyctitropic — nyctitropism /nik ti treuh piz euhm/, n. /nik ti trop ik, troh pik/, adj. Bot. tending to assume at or just before nightfall positions unlike those maintained during the day, as the leaves or flowers of certain plants. [1875 80; NYCTI + TROPIC] * …   Universalium

  • nekʷ-t- — Night. Probably from a verbal root *negʷ , to be dark, be night. O grade form *nokʷ t . 1. a. night; fortnight, from Old English niht, neaht, night; b. Kristallnacht, from Old High German naht, night. Both a and …   Universalium

  • nyctinasty — noun The movement of leaves or petals in response to darkness; the closing of a flower at night. Syn: nyctinastism, nyctitropism …   Wiktionary

  • νυκτοτροπισμός — και νυκτιτροπισμός, ο βοτ. τροπισμός υπό την επίδραση τού σκότους. [ΕΤΥΜΟΛ. Αντιδάνεια λ., πρβλ. αγγλ. nyctitropism < νύξ, νυκτός + τροπισμός] …   Dictionary of Greek

  • nyctitropic — /nɪktəˈtrɒpɪk/ (say niktuh tropik) adjective tending to assume at or just before nightfall positions unlike those maintained during the day, as the leaves of certain plants. {nycti (variant of nyct ) + tropic} –nyctitropism /nɪkˈtɪtrəpɪzəm/ (say… …  

  • nycti- — [nik′ti, nik′tə] [< Gr nyx (gen. nyktos), NIGHT] combining form night [nyctitropism]: also, before a vowel, prefix combining form nyct …   English World dictionary

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