Definition of "progression"

progression

/pɹəˈɡɹɛʃən/

noun
countable and uncountable, plural progressions
1. The act of moving from one thing to another.
2. The act of moving forward or proceeding in a course; motion onward.
  Quotations
  The lowest risk for kidney disease progression seemed to be at levels of current systolic blood pressure of 110 to 129 mm Hg.
  2003, T.H. Jafar et al., Annals of Internal Medicine 139, pages 244–252
3. (mathematics) A sequence obtained by adding or multiplying each term by a constant.
4. Development, increase, evolution.
5. (music, countable) A chord progression.
6. (exercise) The process of making an exercise more strenuous by manipulating the details of its performance like loaded weight, range of motion, angle, speed.