Main Entry: elec·tro·oc·u·lo·gram

Pronunciation: \i-ˌlek-trō-ˈä-kyə-lə-ˌgram\

Function: noun

Etymology: electr- + Latin oculus eye + English -gram — more at eye

Date: 1947

: a record of the difference in electrical charge between the front and back of the eye that is correlated with eyeball movement (as in REM sleep) and obtained by electrodes placed on the skin near the eye