Defn: The art or practice of using the photophone.
PHOTOPHORE
Pho"to*phore, n. [Photo- + Gr. to bear.]
1. (Med.) A form of endoscope using an electric light.
2. (Zoöl.) A light-emitting organ; specif., one of the luminous spots on certain marine (mostly deep-sea) fishes.
PHOTOPLAY
Pho"to*play`, n.
Defn: A play for representation or exhibition by moving pictures; also, the moving-picture representation of a play.
PHOTOPRINT
Pho"to*print`, n.
Defn: Any print made by a photomechanical process.
PHOTOPSIA
Pho*top"si*a, n. Etym: [NL., fr. Gr. (Med.)
Defn: An affection of the eye, in which the patient perceives luminous rays, flashes, coruscations, etc. See phosphene.