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Pronunciation:  'fowtân

Matching Terms:  photo, Photo-, Photo Album, photo CD, photo credit, photo finish, photo op, photo opportunity, photoautotroph, Photobiotic, Photoblepharon, Photoblepharon palpebratus, photocathode, photocell, photochemical, photochemical exchange, photochemical reaction, photochemistry, Photochromic, Photochromy, Photocoagulation, photocoagulator, photoconduction, photoconductive, photoconductive cell, photoconductivity, photocopier, photocopy, Photodrome, Photodynamic Therapy, photoelectric, Photo-electric, photoelectric cell, photoelectric emission, photoelectrical, photoelectrically, photoelectron, Photo-electrotype, photoemission, photoemissive, Photo-engrave, photoengraving, Photo-engraving, Photo-epinasty, Photo-etch, Photo-etching, photoflash, photoflood, Photofrin, Photogalvanography, photogelation process, Photogen, Photogene, photogenic, photogenic epilepsy, Photogeny, Photoglyphic, Photoglyphy, Photoglyptic, Photogram, Photogrammeter, Photogrammetry, Photograph, photograph album, photographer, photographer's model, photographic, photographic camera, photographic emulsion, photographic equipment, photographic film, photographic material, photographic paper, photographic plate, photographic print, photographically, Photographist, Photographometer, Photographone, photography, photogravure, Photoheliograph, Photoheliometer, photohetrotroph, photojournalism, Photolithograph, Photolithographer, Photolithographic, photolithography, Photologic, Photologist, Photology, Photoluminescent, Photomagnetic, Photomagnetism, photomechanical, Photometer, Photometric, Photometrician, Photometry, Photomezzotype, photomicrograph, Photomicrography, photomontage, photo-mosaic, photon microscope, Photonephograph, photo-offset, photo-offset printing, photoperiod, Photophilous, photophobia, Photophone, Photophonic, Photophony, Photophore, photophosphorylation, photopic vision, photopigment, Photoplay, Photoprint, Photopsia, Photopsy, photoreactivating enzyme, photoreactivation, photoreduction, photorefractive keratectomy, Photorelief, photorespiration, photoretinitis, Photoscope, Photoscopic, Photosculpture, photosensitise, photosensitive, Photosensitivity, Photosensitization, photosensitize, Photosensitizer, Photosensitizing pigment, Photoshop, Photosphere, Photospheric, Photostat, Photostat machine, Photosynthesis, photosynthetic, photosystem, photosystem I, photosystem II, phototaxis, Phototelegraphy, Phototelescope, Phototheodolite, phototherapy, Photothermic, Phototonus, Phototopography, Phototrichromatic, phototroph, phototrophic bacteria, Phototropic, phototropic bacteria, Phototropism, Phototype, Phototypic, Phototypography, Phototypy, Photovisual, photovoltaic, photovoltaic cell, Photoxylography, Photozincograph, Photozincography

WordNet Dictionary
 Definition: [n]  a quantum of electromagnetic radiation; an elementary particle that is its own antiparticle
 See Also: electromagnetic radiation, electromagnetic wave, gauge boson, nonparticulate radiation



Biology Dictionary
 Definition: A quantum unit of light energy.
Thesaurus Terms
 Related Terms: actinic ray, actinism, alpha particle, antibaryon, antilepton, antimeson, ASA scale, atomerg, atomic beam, atomic nucleus, atomic particle, atomic ray, baryon, beam, beam of light, beta particle, bougie decimale, British candle, calorie, candle, candle lumen, candle power, candle-foot, candle-hour, candle-meter, decimal candle, dinamode, dyne, electron, elementary particle, energid, erg, exposure meter, flux, foot-candle, foot-pound, gamma ray, gleam, Hefner candle, horsepower-hour, horsepower-year, infrared ray, intensity, international candle, invisible radiation, joule, Kern, kilogram-meter, kilowatt-hour, lamp-hour, leam, lepton, light, light meter, light quantum, lumen, lumen meter, lumen-hour, lumeter, luminous flux, luminous intensity, luminous power, lux, meson, neutron, NMR, nuclear force, nuclear magnetic resonance, nuclear particle, nuclear resonance, nucleon, nucleosynthesis, nucleus, patch, pencil, proton, quantum, radiation, radiorays, ray, ray of light, ribbon, ribbon of light, Scheiner scale, solar rays, strangeness, streak, stream, stream of light, streamer, strong interaction, triton, ultraviolet ray, unit of flux, unit of light, valence electron, violet ray, X ray