Definition of "progression"

The act of moving from one thing to another.  examples

The act of moving forward or proceeding in a course; motion onward.  quotations  examples

(mathematics) A sequence obtained by adding or multiplying each term by a constant.  examples

Development, increase, evolution.  examples

(music, countable) A chord progression.  examples

(exercise) The process of making an exercise more strenuous by manipulating the details of its performance like loaded weight, range of motion, angle, speed.  examples