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A contraction of Photograph. [Colloq.]

A combining form from Gr. fw^s, fwto`s, light; as, photography, phototype, photometer.

Acting by the operation of both light and electricity; -- said of apparatus for producing pictures by electric light.

A cell (as one of two electrodes embedded in selenium) which by exposure to light generates an electric current.

Pert. to, or capable of developing, photo-electricity.

Electricity produced by light.

An electrometer registering by photography.

An electrotype plate formed in a mold made by photographing on prepared gelatine, etc.

To engrave by a photomechanical process; to make a photo- engraving of. -- Pho`to-en*grav"er (#), n.

The process of obtaining an etched or engraved plate from the photographic image, to be used in printing; also, a picture produced by such a process.

A disproportionately rapid growth of the upper surface of dorsiventral organs, such as leaves, through the stimulus of exposure to light. Encyc. Brit.

To engrave, or make an engraving of, by any photomechanical process involving etching of the plate.

A photo-engraving produced by any process involving the etching of the plate.

A genus including certain comma-shaped marine bacteria which emit bluish or greenish phosphorescence. Also, any microörganism of this group.

Requiring light to live; incapable of living without light; as, photobiotic plant cells.

Art or process of decorating pottery with photographically prepared designs. -- Pho`to*ce*ram"ic (#), a.

Of or pertaining to chemical action of light, or produced by it; as, the photochemical changes of the visual purple of the retina.

ch of chemistry which relates to the effect of light in producing chemical changes, as in photography.

Of or pertaining to photochromy; produced by photochromy.

Art or process of printing colored photographs.