Modification/ˌmɑːdɪfɪˈkeɪʃn/ Definition 1 of 4Pro Tip 1/3Scope of Changes Modifications can range from minor to major, affecting how something functions or appears. A modification to the recipe changed the cake's texture. Pro Tip 2/3Intent to Improve Often, a modification aims to improve something according to specific needs or preferences. The chair's design had a modification for better comfort. Pro Tip 3/3Ongoing Process Modifications may occur gradually and can be part of continual improvement. He made a series of modifications to perfect the machine.