[foh-toh-ri-frak-tiv] /ˌfoʊ toʊ rɪˈfræk tɪv/
of or relating to a change in the index of refraction by spatial variations of the light intensity, as in a laser.
- Photorefractive keratectomy
/ˌfəʊtəʊrɪˈfræktɪv ˌkɛrəˈtɛktəmɪ/ noun 1. laser eye surgery that involves scraping away the protective cells of the cornea before reshaping its surface to improve vision PRK
- Photo relief
noun 1. a method of showing the configuration of the relief of an area by photographing a model of it that is illuminated by a lamp in the northwest corner
[foh-toh-ri-zist] /ˌfoʊ toʊ rɪˈzɪst/ noun 1. Electronics. a photosensitive liquid polymer, used in photolithography to produce integrated circuits.
photoresistor (fō’tō-rĭ-zĭs’tər) A resistor whose resistance varies as a function of the intensity of light it is exposed to. Also called photocell. See also photoelectric.