What's the difference between i.e. and e.g.?
c.1300, abreggen, "to make shorter, to condense," from Old French abregier "abridge, diminish, shorten," from Late Latin abbreviare "make short" (see abbreviate). The sound development from Latin -vi- to French -dg- is paralleled in assuage (from assuavidare) and deluge (from diluvium). Related: Abridged; abridging.