What's the difference between i.e. and e.g.?
early 15c., from Middle French satisfier, from Old French satisfaire "pay, repay, make reparation" (14c., Modern French satisfaire), from Latin satisfacere "discharge fully, comply with, make amends," literally "do enough," from satis "enough" (from PIE root *sa- "to satisfy;" see sad) + facere "perform" (see factitious). Related: Satisfied; satisfying.