phot | (noun) a unit of illumination equal to 1 lumen per square centimeter; 10,000 phots equal 1 lux | - |
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photalgia | (noun) pain in the eye resulting from exposure to bright light (often associated with albinism) | Synonyms: photophobia |
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photo | (noun) a representation of a person or scene in the form of a print or transparent slide or in digital format | Synonyms: exposure, photograph, pic, picture |
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photocathode | (noun) a cathode that emits electrons when illuminated | - |
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photocell | (noun) a transducer used to detect and measure light and other radiations | Synonyms: electric eye, magic eye, photoconductive cell, photoelectric cell |
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photochemistry | (noun) branch of chemistry that deals with the chemical action of light | - |
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photocoagulation | (noun) surgical procedure that uses an intense laser beam to destroy diseased retinal tissue or to make a scar that will hold the retina in cases of detached retina | - |
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photocoagulator | (noun) surgical instrument containing a laser for use in photocoagulation | - |
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photoconduction | (noun) change in the electrical conductivity of a substance as a result of absorbing electromagnetic radiation | Synonyms: photoconductivity |
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photoconductivity | (noun) change in the electrical conductivity of a substance as a result of absorbing electromagnetic radiation | Synonyms: photoconduction |
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photocopier | (noun) a copier that uses photographic methods of making copies | - |
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photocopy | (noun) a photographic copy of written or printed or graphic work | - |
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photoelectricity | (noun) electricity generated by light or affected by light | - |
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photoelectron | (noun) an electron that is emitted from an atom or molecule by an incident photon | - |
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photoemission | (noun) an emission of photoelectrons (especially from a metallic surface) | - |
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photoengraving | (noun) an engraving used to reproduce an illustration | Synonyms: halftone, halftone engraving |
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photoflash | (noun) a lamp for providing momentary light to take a photograph | Synonyms: flash, flash bulb, flash lamp, flashbulb, flashgun |
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photoflood | (noun) light that is a source of artificial illumination having a broad beam; used in photography | Synonyms: flood, flood lamp, floodlight |
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photograph | (noun) a representation of a person or scene in the form of a print or transparent slide or in digital format | Synonyms: exposure, photo, pic, picture |
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photographer | (noun) someone who takes photographs professionally | Synonyms: lensman |
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photography | (noun) the act of taking and printing photographs | Synonyms: picture taking |
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(noun) the occupation of taking and printing photographs or making movies | - |
(noun) the process of producing images of objects on photosensitive surfaces | - |
photogravure | (noun) using photography to produce a plate for printing | Synonyms: rotogravure |
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(noun) an intaglio print produced by gravure | Synonyms: gravure, heliogravure |
(noun) printing from an intaglio plate prepared by photographic methods | - |
photoheliograph | (noun) a telescope, with a camera attached, used to photograph the Sun. | - |
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photojournalism | (noun) journalism that presents a story primarily through the use of pictures | - |
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photojournalist | (noun) a journalist who presents a story primarily through the use of photographs | - |
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photolithograph | (noun) a lithograph produced by photographically produced plates | - |
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photolithography | (noun) a planographic printing process using plates made from a photographic image | - |
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photomechanics | (noun) the technique of using photomechanical methods to make photographs into plates for printing | - |
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(noun) the process whereby printing surfaces (plates or cylinders) are produced by photographic methods | Synonyms: photoplate making |
photometer | (noun) photographic equipment that measures the intensity of light | Synonyms: exposure meter, light meter |
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(noun) measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source | - |
photometrician | (noun) someone who practices photometry | Synonyms: photometrist |
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photometrist | (noun) someone who practices photometry | Synonyms: photometrician |
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photometry | (noun) measurement of the properties of light (especially luminous intensity) | - |
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photomicrograph | (noun) a photograph taken with the help of a microscope | - |
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photomontage | (noun) a montage that uses photographic images | - |
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photomosaic | (noun) arrangement of aerial photographs forming a composite picture | Synonyms: arial mosaic, mosaic |
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photon | (noun) a quantum of electromagnetic radiation; an elementary particle that is its own antiparticle | - |
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photophobia | (noun) pain in the eye resulting from exposure to bright light (often associated with albinism) | Synonyms: photalgia |
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(noun) a morbid fear of light | - |
photopigment | (noun) a special pigment found in the rods and cones of the retina | - |
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photoretinitis | (noun) damage to the retina resulting from exposure of the eye to the sun without adequate protection | - |
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photosensitivity | (noun) sensitivity to the action of radiant energy | Synonyms: radiosensitivity |
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photosphere | (noun) the intensely luminous surface of a star (especially the sun) | - |
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photostat | (noun) a photocopy made on a Photostat machine | - |
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photosynthesis | (noun) synthesis of compounds with the aid of radiant energy (especially in plants) | - |
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phototelegraph | (noun) an apparatus for transmitting pictures by phototelegraphy. | - |
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phototelegraphy | (noun) an early technology for the transmission of facsimiles. | - |
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phototherapy | (noun) the use of strong light to treat acne or hyperbilirubinemia of the newborn | - |
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phototropism | (noun) an orienting response to light | - |
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