staircase

1. (transitive) To modify (a signal, a graph, etc.) to reduce a smooth curve to a series of discrete steps.Examples: "This leads to much smoother reconstructions in regions of moderate gradient and thus prevents staircasing."transitive

2. (real estate) To increase one's share in a co-ownership.Examples: "It is a good idea to make plans for staircasing when you first buy your shared ownership home."