Photomicrography, fō-tō-mī-krog′ra-fi, n. the enlargement of microscopic objects by means of the microscope, and the projection of the enlarged image on a sensitive film.—ns. Photomī′crograph; Photomicrog′rapher.—adj. Photomicrograph′ic. [Gr. phōs, phōtos, light, mikros, little, graphein, to write.]
Photophobia, fō-tō-fō′bi-a, n. a dread of light.—adj. Photophob′ic.
Photophone, fō′tō-fōn, n. an apparatus for transmitting articulate speech to a distance along a beam of light. [Gr. phōs, phōtos, light, phōnē, sound.]
Photo-process, fō′tō-pros′es, n. any process by which is produced, by the agency of photography, a matrix from which prints can be made in ink—photogravure, photolithography, and photozincography.
Photopsia, fō-top′si-a, n. the condition of having the sensation of light without external cause.—Also Phō′topsy.
Photo-relief, fō′tō-re-lēf′, n. a process of producing plates by means of photography, from which impressions can be taken in an ordinary printing-press.
Photosculpture, fō-tō-skulp′tūr, n. the art of taking likenesses in the form of statuettes or medallions by the aid of photography.
Photosphere, fō′tō-sfēr, n. the luminous envelope round the sun's globe, which is the source of light. [Gr. phōs, phōtos, light, sphaira, a sphere.]
Phototherapy, fō-tō-ther′a-pi, n. the art of healing (of lupus, &c.) by means of light, electric or other, focussed on the diseased part. [Gr. phōs, phōtos, light, therapeuein, to heal.]
Phototype, fō′tō-tīp, n. a type or plate of the same nature as an engraved plate, produced from a photograph.—n. Phō′totypy. [Gr. phōs, phōtos, light, typos, type.]