n.
Pronunciation: ˌ äp-( ˌ )t ō -i-lek- ' trä-niks, - ē -lek-
Function: noun plural but singular in construction
Date: 1959
: a branch of electronics that deals with electronic devices for emitting, modulating, transmitting, and sensing light
– op · to · elec · tron · ic \ -nik \ adjective