Meaning

noun an abatement in intensity or degree (as in the manifestations of a disease)

noun a payment of money sent to a person in another place

noun (law) the act of remitting (especially the referral of a law case to another court)

originFrom Middle English remissioun (“release from duty; freeing of captives; mercy, pardon, respite; forgiveness; release from or reduction of penances; reduction in intensity (of a quality, symptom, etc.); transfer of property, quitclaim; legal opinion or submission; reference, cross-reference”) [and other forms], from Anglo-Norman remission, remissione, remissioun, remissiun and Middle French, Old…

Etymology from Wiktionary, CC BY-SA 3.0