noun
A pardon of a sin; (chiefly historical, also figuratively) the forgiveness of an offence, or relinquishment of a (legal) claim or a debt.
A lessening of amount due, as in either money or work, or intensity of a thing.
An act of remitting, returning, or sending back.
(spectroscopy) Reflection or back-scattering of light by a material; (to send back)
verb
(transitive) To change the mission of; to provide with a new mission.