- photoperiod
- noun Date: 1920 a recurring cycle of light and dark periods of constant length; also photophase 2 • photoperiodic adjective • photoperiodically adverb
New Collegiate Dictionary. 2001.
photoperiod
Look at other dictionaries:
photoperiod — [fōt′ō pir΄ē əd] n. the number of daylight hours best suited to the growth and maturation of an organism photoperiodic [fōt΄ōpir΄ē äd′ik] adj … English World dictionary
photoperiod — fotoperiodas statusas T sritis augalininkystė apibrėžtis Dienos šviesos meto ilgis, reikalingas augalui rutuliotis. atitikmenys: angl. photoperiod rus. фотопериод ryšiai: sinonimas – švieslaikis … Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas
photoperiod — the length of sunlit portion of the day, which changes seasonally and latitudinally. Also refers to the lighting regime set up for an aquarium or for an experiment … Dictionary of ichthyology
photoperiod — photoperiodic /foh teuh pear ee od ik/, photoperiodical, adj. photoperiodically, adv. /foh teuh pear ee euhd/, n. Biol. the interval in a 24 hour period during which a plant or animal is exposed to light. [1915 20; PHOTO + PERIOD] * * * … Universalium
photoperiod — noun The normal duration of natural daylight experienced by an organism; daylength … Wiktionary
photoperiod — pho·to·pe·ri·od .fōt ō pir ē əd n a recurring cycle of light and dark periods of constant length pho·to·pe·ri·od·ic .pir ē äd ik adj pho·to·pe·ri·od·i·cal·ly i k(ə )lē adv * * * pho·to·pe·ri·od (foґto pēr″e əd) the period of time… … Medical dictionary
photoperiod — n. duration of exposure to light over a 24 hour period (Biology) fəʊtəʊpɪrɪəd / pəɪr … English contemporary dictionary
photoperiod — noun Botany & Zoology the period of daily illumination received by an organism. Derivatives photoperiodic adjective … English new terms dictionary
photoperiod — Characteristic light interval that induces particular light mediated responses in plants. Cf. thermoperiod … Expanded glossary of Cycad terms
photoperiod — pho·to·period … English syllables
