[foh-toh-dahy-nam-iks] /ˌfoʊ toʊ daɪˈnæm ɪks/
noun, (used with a singular verb)
the science dealing with light and its effects on living organisms.
(functioning as sing) the branch of biology concerned with the effects of light on the actions of plants and animals
photodynamics pho·to·dy·nam·ics (fō’tō-dī-nām’ĭks)
The science that deals with the activating effects of light on living organisms.
The scientific study of the effects of light on organic compounds and on the metabolisms of living things.
photodynia pho·to·dyn·i·a (fō’tə-dĭn’ē-ə) n. See photalgia.
[foh-toh-i-la-stis-i-tee, -ee-la-stis-] /ˌfoʊ toʊ ɪ læˈstɪs ɪ ti, -ˌi læˈstɪs-/ noun, Physics. 1. the phenomenon of double refraction of polarized light by a transparent substance under elastic stress, used to measure strain in elastic, transparent materials. /ˌfəʊtəʊɪlæˈstɪsɪtɪ/ noun 1. the effects of stress, such as double refraction, on the optical properties of transparent materials
[foh-toh-i-lek-trik] /ˌfoʊ toʊ ɪˈlɛk trɪk/ adjective 1. pertaining to the electronic or other effects produced by light. /ˌfəʊtəʊɪˈlɛktrɪk/ adjective 1. of or concerned with electric or electronic effects caused by light or other electromagnetic radiation photoelectric pho·to·e·lec·tric (fō’tō-ĭ-lěk’trĭk) or pho·to·e·lec·tri·cal (-trĭ-kəl) adj. Of or relating to the electric effects, especially increased conductivity, caused by light. […]
noun, Electronics. 1. . noun 1. another name for photocell photoelectric cell An electronic device having an electrical output that varies in response to the strength of incident electromagnetic radiation, especially visible light. Photoelectric cells make use of the photoelectric effect, in which electrons are displaced by photons in substances such as silicon or selenium […]