Progression - Definition
progression
n 1: a series with a definite pattern of advance [syn:
progression, patterned advance]
2: a movement forward; "he listened for the progress of the
troops" [syn: progress, progression, advance]
3: the act of moving forward (as toward a goal) [syn:
progress, progression, procession, advance,
advancement, forward motion, onward motion] [ant:
retreat]