spectrophotoelectric

[ spek-troh-foh-toh-i-lek-trik ]
/ ˌspɛk troʊˌfoʊ toʊ ɪˈlɛk trɪk /

adjective Physics.

pertaining to the relationship between the wavelength of the incident radiation and the number of electrons released by a photoelectric substance.

Origin of spectrophotoelectric