progression noun

ADJ. rapid | gradual, slow, steady | smooth | upward | linear, logical, natural By a logical progression of thought, she worked out why the remark had caused offence. | career | chord, harmonic

PREP. ~ from … to … his progression from chubby teenager to handsome movie star | ~ through Her progression through the grades of the civil service had been rapid. | ~ within his steady upward progression within the company

PHRASES the progression of a disease one of the later stages in the progression of the disease