WordReference Random House Unabridged Dictionary of American English © 2025
op•to•e•lec•tron•ics
(op′tō i lek tron′iks, -ē′lek-),USA pronunciation n. (used with a sing. v.)
op′to•e•lec•tron′ic, adj.
- Electronicsthe branch of electronics dealing with devices that generate, transform, transmit, or sense optical, infrared, or ultraviolet radiation, as cathode-ray tubes, electroluminescent and liquid crystal displays, lasers, and solar cells.
- opto- + electronics 1955–60