I. prefix Etymology: Middle English, from Anglo-French & Latin; Anglo-French, from Latin (also, prefix with perfective and causative value), from ex out of, from; akin to Greek ex, ~ out of, from Old Church Slavic iz out of ; outside , not , former , see: exo-
EX-
Meaning of EX- in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012