The Collaborative International Dictionary of English v.0.48:
Photo-electric \Pho`to-e*lec"tric\, Photo-electrical \Pho`to-e*lec"tric*al\, a. Pertaining to, or capable of developing, photo-electricity. [Webster 1913 Suppl.]WordNet (r) 3.0 (2006):
photoelectrical adj 1: of or pertaining to photoelectricity; "the photoelectric effect" [syn: photoelectric, photoelectrical]