1. A change to something; an alteration (a contract modification). [Cases: Contracts 236. C.J.S. Contracts §§ 407, 409–411.]
2. A qualification or limitation of something (a modification of drinking habits).
3. Parliamentary law. A change in a motion that its mover initiates or accepts, usu. before the chair has stated the motion. • The mover controls a motion only until the chair states the question, after which the motion belongs to the assembly and the mover cannot modify it without the assembly’s permission. See request for permission to modify a motion under REQUEST.