PHOTOLOGIST
Pho*tol"o*gist, n.
Defn: One who studies or expounds the laws of light.
PHOTOLOGY
Pho*tol"o*gy, n. Etym: [Photo- + -logy: cf. F. photologie.]
Defn: The doctrine or science of light, explaining its nature and phenomena; optics.
PHOTOLUMINESCENT
Pho`to*lu`mi*nes"cent, a. [Photo- + luminescent.] (Physics)
Defn: Luminescent by exposure to light waves. —
Pho`to*lu`mi*nes"cence (#), n.
PHOTOMAGNETIC
Pho`to*mag*net"ic, a.
Defn: Of or pertaining to photomagnetism.
PHOTOMAGNETISM
Pho`to*mag"net*ism, n.
Defn: The branch of science which treats of the relation of magnetism to light.