Nyctitropism
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 leaflets of clover and other leguminous plants.

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • 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

  • 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… …   Australian English dictionary

  • 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

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”