SG Heritage Dictionary

Photo- Webster's Dictionary 1913

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

Photo-electric [Adjective] Webster's Dictionary 1913

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

Photo-electrotype [Noun] Webster's Dictionary 1913

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

Photo-engraving [Noun] Webster's Dictionary 1913

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.

Photo-epinasty [Noun] Webster's Dictionary 1913

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