Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z photoactivatable That is able to be activated by light photoactivate To activate by means of photoactivation photoactivated activated by light photoactivating That causes photoactivation photoactivation The absorption of energy from a photon in raising a molecule (or chromophore) from the ground state; especially the first stage of photosynthesis in which energy is absorbed by chlorophyll photoactive Able to convert the energy of light into electricity via photoelectricity photoactivity The condition of being photoactive photoadaptation adaptation of an organism to the changing amount of light in its environment photoadaptational Relating to photoadaptation photoadapted adapted by photoadaptation photoadaptive Relating to, or undergoing photoadaptation photoaddition Any bimolecular addition reaction that takes place under the influence of light photoadduct A photochemical adduct photoadsorption An increase in the adsorption of a substance at an interface in the presence of light. photoaffinity the photoexcitation of a molecular entity (normally associated with a biomolecule) in order to attach a label photoaged Having undergone photoaging. photoaging The damaging effect of prolonged exposure to sunlight on the skin, especially wrinkling, discoloration and susceptibility to cancer photoagonism photochemical agonism photoalgraphy Synonym of algraphy. photoalidade A surveying instrument used to plot lines and measure directions between terrestrial features from photographs photoaligned aligned by means of photoalignment photoalignment The light-induced alignment of certain liquid crystals. photoallergen A substance that generates an allergic response in the presence of light photoallergenic Relating to, or functioning as a photoallergen photoallergenicity The condition of being photoallergenic photoallergic Showing an allergic reaction only after exposure to light photoallergy An allergy that is activated by light. photoammonification photochemical ammonification photoamplifier A photographic amplifier photoanaerobe Any photoautotrophic anaerobe photoangiolysis angiolysis by means of laser light photoangiolytic Relating to photoangiolysis. photoangioplasty photodynamic treatment of diseased arteries photoannulation photochemical annulation photoanode The anode of a photoelectric cell. photoanodic Relating to a photoanode. photoantenna The structure, in a flavoprotein etc, that interacts with light photoantigen A substance that produces an immune response in the presence of light photoantimicrobial An antimicrobial that is activated by the presence of light photoapparatus Synonym of photo camera. photoaquation photochemical aquation photoassimilate Any compound formed by assimilation of others under the action of light; especially such carbohydrates that are formed by photosynthesis photoassimilation The process of photoassimilating. photoassimilatory Relating to, or causing photoassimilation photoassisted Describing catalysis in which the catalyst is formed by the absorption of light photoassociate To associate atoms by means of photoassociation photoassociated associated through photoassociation photoassociation The association of two atoms, under the influence of laser light, to form an excited diatomic molecule. photoassociative Of, pertaining to, or resulting from photoassociation photoattraction photochemical attraction photoautotroph an organism, such as all green plants, that can synthesize its own food from inorganic material using light as a source of energy photoautotrophic Relating to a photoautotroph or to photoautotrophism photoautotrophically In a photoautotrophic manner photoautotrophism autotrophism that uses light as a source of energy photoautotrophy The condition of being a photoautotroph. photoaversion aversion to (bright) light photoaversive Relating to photoaversion photoavoidance avoidance of exposure to light photobacterial Of or pertaining to photobacteria photobactericidal That kills photobacteria photobacteriosis infection by photobacteria photobacterium Any of the genus Photobacterium of bioluminescent bacteria. photobank A collection of photographs that can be licensed for use elsewhere. photobaric Relating to the production of a photoacoustic signal by photosynthetic oxygen evolution. photobash To compose a digital image from multiple assets, such as photos and 3D models, with artistic interpretation to modify and blend them together seamlessly. photobathic photic photobeam A beam of light whose interruption triggers a warning or a mechanism (such as a door). photobehavior A behavior in response to light. photobehavioral Relating to photobehavior. photobiliprotein Synonym of biliprotein. photobiochemical Relating to photobiochemistry photobiochemistry biochemistry mediated by light photobiography A biography illustrated with, or comprising, photographs. photobiologic Synonym of photobiological. photobiological Of or pertaining to photobiology. photobiologically By means of, or in terms of, photobiology. photobiologist A biologist whose speciality is photobiology photobiology The study of the effects of light on living organisms, and on biological processes photobiolysis biolysis initiated by light photobiomass photochemical biomass photobiomodulation Any of several therapeutic techniques that employ low-level laser or LED light to relieve pain or to heal wounds photobiomodulatory Relating to photobiomodulation photobionic Relating to photoelectric interactions in biological systems photobiont A photosynthetic symbiont, especially those in symbiosis with fungi in lichen. photobiophysical Of or pertaining to photobiophysics photobiophysics The branch of biophysics that deals with the interaction of light with biological systems photobioreactor A bioreactor in which photofermentation takes place. photobiostimulation biostimulation by means of light photobiosynthesis biosynthesis that is induced or regulated by light photobiosynthetic Relating to photobiosynthesis. photobiotechnology photochemical biotechnology (typically employing photosynthesis) photobiotic Dependent on light for life and growth. photobiotin A photoactivatable derivative of biotin used in biochemical research photoblank The blank surface on which a photomask can be created. photoblastic Of a seed: having its germination affected by light, either positively or negatively. photobleach To become less absorbent, reflective or fluorescent upon exposure to light. photobleachable Able to be photobleached photobleached bleached or faded by exposure to light photobleaching The destruction of a photochemical fluorescence by high-intensity light photoblinking Alternating fluorescence and photobleaching photoblocker A substance that stops light. photoblog A type of blog designed primarily to showcase photographs. photoblogger One who publishes a photoblog. photoblogging The use of a blog to showcase photographs. photoboard A large photograph mounted on a board used for display purposes. photobomb To unexpectedly appear in a photograph, especially so as to ruin the picture. photobomber One who photobombs. photobombing The practice or phenomenon of making an unexpected appearance in a photograph, especially with the deliberate intention of ruining it. photobook A book of photographs, often by a single photographer. photocage Any of several molecular species that can be activated by light; they are used especially in biochemistry to attach a molecule to a biologically active compound and then study its behaviour once activated. photocaged Fitted with a photocage photocaging The construction of a photocage photocall A gathering of theatrical performers for the purpose of being photographed. photocapacitance The change in capacitance caused by light absorption. photocapture To select and then produce a still image from a movie photocarcinogen Any substance that becomes a carcinogen on exposure to light. photocarcinogenesis The creation of cancer cells by the action of light photocarcinogenic Becoming a carcinogen on exposure to light. photocarcinogenicity The state or condition of being photocarcinogenic. photocard A card bearing a photograph, often a photograph of the cardholder for identification purposes. photocarotenogenesis The biosynthesis of carotenes under the influence of light photocarrier A photoexcited electrical carrier in a semiconductor. photocascade A photochemical cascade (series of reactions) photocatalysis catalysis by a photocatalyst photocatalyst A substance that absorbs light and, in doing so, catalyzes a reaction. photocatalytic Of, pertaining to, or obtained by photocatalysis. photocatalytically In a photocatalytic manner photocatalyze To subject to photocatalysis. photocatalyzed catalyzed by the use of a photocatalyst photocatalyzer Synonym of photocatalyst. photocathode A cathode that emits electrons when exposed to light. photocathodic Relating to a photocathode. photocell A photoelectric cell. photocenter The centre of light production of a dispersed source photocentric Relating to a photocentre photoception The perception of light photoceptive Relating to photoception photoceptor photoreceptor photoceramic A photograph reproduced upon a ceramic surface. photoceramics The art or process of decorating pottery with photographically prepared designs. photoceramist One who produces photoceramics. photocharge To record a book loan from a library by using a machine (a photocharger) to photograph the borrower's library card and information about the book in card form. photocharger A machine for photocharging. photochemic photochemical photochemical Of, relating to, or produced by photochemistry or by photochemical reactions. photochemically By means of, or in terms of, photochemistry. photochemist A chemist who works in photochemistry photochemistry The study of photochemical reactions. photochemopreventive That prevents photochemical damage to the body (by means of a dietary supplement). photochemoprotective photochemically chemoprotective