Definition of "ex-" in English

prefix

1. out of

   • borrowed from Latin: extract, expel, except, expression, exclusion

2. outside

   • ex-directory; borrowed from Latin: exterior

3. former (this meaning is probably a semantic extension from the sense of "out, away")

   • ex-husband, ex-president, ex-wife

4. (biology) Without, not possessing; lacking.

   • excaudate, exstipulate