Nyctitropic
Nyctitropic Nyc`ti*trop"ic, a. [From Gr. ny`x, nykto`s, night + ? turning.] (Bot.) Turning or bending at night into special positions. [1913 Webster]

Note: Nyctitropic movements of plants usually consist in a folding or drooping of the leaves, the advantage being in lessening the radiation of heat. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • 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

  • nyctitropic — nyc·ti·trop·ic …   English syllables

  • 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… …   Australian English dictionary

  • nyctitropic — adj. Bot. (of plant movements) occurring at night and caused by changes in light and temperature. Etymology: Gk nukti comb. form of nux nuktos night + tropos turn …   Useful english dictionary

  • 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. * * * nyc·tit·ro·pism (nĭk tĭtʹrə pĭz əm) n. The …   Universalium

  • νυκτιτροπικός — ή, ό βοτ. αυτός που αναφέρεται στον νυκτιτροπισμό ή έχει σχέση με τον νυκτιτροπισμό. [ΕΤΥΜΟΛ. Αντιδάνεια λ., πρβλ. αγγλ. nyctitropic < νύξ, νυκτός + τρόπος] …   Dictionary of Greek

  • sleep-movement — /ˈslip muvmənt/ (say sleep moohvmuhnt) noun one of the movements of leaves and flowers or their parts, when they close at night. See nyctitropic …   Australian English dictionary

  • 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

  • sleep — [slēp] n. [ME slep < OE slæp, akin to Ger schlaf, sleep, schlaff, loose, lax < IE * slab < base * (s)leb , * (s)lab , loose, slack > LIP, LIMP1, L labor, to slip, sink] 1. a) a natural, regularly recurring condition of rest for the… …   English World dictionary

  • nyct- — combining form or nycti or nycto Etymology: New Latin, from Latin, from Greek nykt , nykti , nykto , from nykt , nyx night more at night …   Useful english dictionary

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