(illumination per square centimeter)

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• phot — /fot, foht/, n. Optics. a unit of illumination, equal to 1 lumen per square centimeter. Abbr.: ph [1915 20; < Gk phot , s. of phôs (contr. of pháos) light] * * * …   Universalium

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• phot — [[t]fɒt, foʊt[/t]] n. opt a unit of illumination, equal to one lumen per square centimeter. Abbr.: ph • Etymology: 1915–20; < Gk phōt , s. of phôs (contr. of pháos) light …   From formal English to slang

• phot — (ph)    the CGS unit of illuminance or illumination, equal to one lumen per square centimeter or 10 000 lux. See also lambert. The name is usually pronounced to rhyme with not rather than note …   Dictionary of units of measurement