Re`tro*ac"tion (?), n. [Cf. F.
rétroaction.] 1. Action returned,
or action backward.
2. Operation on something past or
preceding.
Re`tro*ac"tion (?), n. [Cf. F.
rétroaction.] 1. Action returned,
or action backward.
2. Operation on something past or
preceding.