1. (n.) A proceeding in a course from one step to the next\; motion onward.

2. (n.) Course; passage; lapse or process of time.

3. (n.) Regular or proportional advance in increase or decrease of numbers; continued proportion, arithmetical, geometrical, or harmonic.

4. (n.) A regular succession of tones or chords; the movement of the parts in harmony; the order of the modulations in a piece from key to key.

Great Leap Forward Indian file accomplishment advance advancement alternation amelioration amendment amplification array articulation ascension ascent bank bettering betterment blossoming boost broadening buzz catena catenation chain chain reaction chaining coming after concatenation connection consecution consecutiveness continualness continuance continuation continuity continuum course cycle descent development developmental change drone elaboration elevation endless belt endless round endurance enhancement enlargement enrichment eugenics euthenics evolution evolutionary change evolvement evolving expansion explication extending extension file filiation flow flowering following furtherance gamut geometrical progression gradation gradual change growth headway hum improvement intensification lengthening lift line lineage logical sequence maintenance maturation melioration mend mending monotone natural development natural growth nexus nonviolent change order order of succession pendulum periodicity perpetuation perseverance persistence pickup plenum posteriority postposition powder train preferment procession progress prolongation promotion protraction pursuance queue range rank recovery recurrence repetition restoration reticulation revival ripening rise rotation round routine row run scale sequel sequence series single file spectrum spread spreading staying power straight course string subjunction succession successiveness suffixation sustained action sustenance swath thread tier train unfolding uninterrupted course unremittingness upbeat upgrowth uplift upping upswing uptrend upward mobility way windrow