photokinesis

photokinesis
Alteration of random movements of motile organisms in response to light. [photo- + G. kinesis, movement]

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pho·to·ki·ne·sis -kə-'nē-səs, -kī- n, pl -ne·ses -'nē-.sēz motion or activity induced by light
pho·to·ki·net·ic -'net-ik adj

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pho·to·ki·ne·sis (fo″to-kĭ-neґsis) [photo- + -kinesis] a change in the rate of motion in response to light, as an increase or decrease in motility of bacteria with a change in illumination. photokinetic adj

Medical dictionary. 2011.

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Look at other dictionaries:

  • photokinesis — [fōt΄ō ki nē′sis] n. [ModL < PHOTO + kinesis, motion < Gr kinēsis < kinein, to move] Physiol. movement in response to light photokinetic [fōt΄ō kinet′ik] adj …   English World dictionary

  • photokinesis — noun Etymology: New Latin Date: 1905 motion or activity induced by light • photokinetic adjective …   New Collegiate Dictionary

  • photokinesis — n. [Gr. phos, light; kinesis, movement] A kinesis in response to stimulation by visual cognizance …   Dictionary of invertebrate zoology

  • photokinesis — photokinetic /foh toh ki net ik, kuy /, adj. /foh toh ki nee sis, kuy /, n. Physiol. movement occurring upon exposure to light. [1900 05; PHOTO + KINESIS] * * * …   Universalium

  • photokinesis — noun a) Any movement that is in response to light. b) The ability to mentally manipulate light …   Wiktionary

  • photokinesis — n. movement or activity caused by the influence of light …   English contemporary dictionary

  • photokinesis — pho·to·kinesis …   English syllables

  • photokinesis — pho•to•ki•ne•sis [[t]ˌfoʊ toʊ kɪˈni sɪs, kaɪ [/t]] n. Biol. bio movement occurring upon exposure to light • Etymology: 1900–05 pho to•ki•net′ic ˈnɛt ɪk adj …   From formal English to slang

  • photokinesis — /ˌfoʊtoʊkəˈnisəs/ (say .fohtohkuh neesuhs), / kaɪ / (say kuy ) noun movement occurring upon exposure to light. –photokinetic, adjective …  

  • photokinesis —   n. activity caused by light.    ♦ photokinetic, a …   Dictionary of difficult words

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