photopositive

[ foh-tuh-poz-i-tiv ]

adjective

, Physics.

1. pertaining to a substance whose conductivity increases upon absorption of electromagnetic radiation.

photopositive

/ ˌfəʊtəʊˈpɒzɪtɪv /

adjective

1. physics (of a material) having an electrical conductivity that increases with increasing illumination

Word History and Origins

Origin of photopositive¹

First recorded in 1910–15; photo- + positive