photozincograph (fotozingkograf)

photo zincography (foto-zing-kog'ra-fi), n. [= F.photo zin cog rap hie; as Gr. φῶς ( φωτ- ), light, + [E. zincography.] A proce of photo-engraving analogous to photolithography, but having the matrix formed on a plate of zinc instead of a lithographic stone; also, photo-etching executed on zinc. Also photo zinco typy. a. etr - y + -ic - al.] Pertaining to pho [ tachometry.] The to tachometry. photo tachometry (fō"tō-ta-kom'et-ri), n. Gr. φῶς (φωτ-), light, + E. tachometry. measurement of the velocity of light. phototactic (fō-to-tak'tik), tactic (fo-to-tak'tik), a. [ phototaxis, after tactic.] In bot., pertaining to, character istic of, or exhibiting phototaxis. phototaxis (fo-to-tak's is), n. [NL., In bot . the bot., the taking by certain organisms or organs of a definite position sition with reference to the direction of the incident rays of light, as when the zoöspores of various Ulothrix, etc.) place their long axes parallel to the direction of the incident rays. photo telephone (fō-to-tel'e-fon), n. (φωτ), light, + E. telephone.] Same as photo is plants ( Hem a to coccus, [ phone. photo theodolite (foto-the-od'ō-līt), n. [ means of photographs. phototonic (fo-to-ton'ik), a. [ light, + τόνος, tension: see tone.] In bot., to ration of irritability in organs that have been kept for some days in continuous darkne . as the formation over the whole surface of the plate of an even series of fine lines, or a finely dotted or stippled ground. Such plates are called half - tone plates. (See half-tone proce , under photo - engraving.) Also used attributively to note a relief-plate, or an impre ion from such a plate, made by photo-proce . photopsia (fo-top'si-ä), n. [NL., photo scope (fōtō-skōp), n. [