[foh-to-truh-piz-uh m, foh-toh-troh-piz-uh m] /foʊˈtɒ trəˌpɪz əm, ˌfoʊ toʊˈtroʊ pɪz əm/
phototropic tendency or growth.
the growth response of plant parts to the stimulus of light, producing a bending towards the light source
the response of animals to light; phototaxis
1899, from German phototropie (1892), from photo- + tropism.
phototropism pho·tot·ro·pism (fō-tŏt’rə-pĭz’əm)
Growth or movement of a sessile organism toward or away from a source of light.
pho’to·tro’pic (fō’tə-trō’pĭk, -trŏp’ĭk) adj.
The growth or movement of a fixed organism toward or away from light. In plants, phototropism is a response to blue wavelengths of light and is caused by a redistribution of auxin from the illuminated side to the darker side of the shoot, resulting in quicker growth on the darker side and bending of the shoot toward the source of light. Certain sessile invertebrates also exhibit phototropism.
/ˌfəʊtəʊˈtrəʊpɪ/ noun (chem) 1. an alteration in the colour of certain substances as a result of being exposed to light of different wavelengths 2. the reversible loss of colour of certain dyestuffs when illuminated at a particular wavelength
[foh-tuh-toob, -tyoob] /ˈfoʊ təˌtub, -ˌtyub/ noun, Electronics. 1. an with a photosensitive cathode, used like a photocell. /ˈfəʊtəʊˌtjuːb/ noun 1. a type of photocell in which radiation falling on a photocathode causes electrons to flow to an anode and thus produce an electric current
[foh-tuh-tahyp] /ˈfoʊ təˌtaɪp/ noun, Printing. 1. a plate with a relief printing surface produced by photography. 2. any process for making such a plate. 3. a print made from it. /ˈfəʊtəʊˌtaɪp/ noun 1. verb 2. (transitive) to reproduce (an illustration) using a phototype
[foh-toh-tahyp-set-ing] /ˌfoʊ toʊˈtaɪpˌsɛt ɪŋ/ noun 1. Printing. . /ˌfəʊtəʊˈtaɪpˌsɛtɪŋ/ noun 1. (printing) another word for photocomposition
/ˌfəʊtəʊˈtaɪpˌsɛt/ verb -sets, -setting, -set 1. (transitive) to set (type matter) by phototypesetting