plural noun elec·tro–op·tics \i-ˌlek-trō-ˈäp-tiks\

Definition of electro–optics

  1. 1 singular in construction :  a branch of physics that deals with the effects of an electric field on light traversing it

  2. 2 :  electro-optical devices

Circa 1889

First Known Use of electro–optics

circa 1889

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