/ Dictionary / Index P photoconductivity: Meaning and Definition of Find definitions for: pho•to•con•duc•tiv•i•ty Pronunciation: (fō"tō-kon"duk-tiv'i-tē), [key] — n. Physics. the increase in the electrical conductivity of a substance, often nonmetallic, caused by the absorption of electromagnetic radiation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: photoconductivity (Thesaurus) photoconductive cell photocopier Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language