movement, passage, or change from one position, state, stage, subject, concept, etc., to another; change

the transition from adolescence to adulthood.

Music .

a passing from one key to another; modulation.

a brief modulation; a modulation used in passing.

a sudden, unprepared modulation.

a passage from one scene to another by sound effects, music, etc., as in a television program, theatrical production, or the like.

to make a transition

He had difficulty transitioning from enlisted man to officer.

noun

beginning , conclusion , end , finish , introduction , sameness , stagnation , start

noun

alteration , changeover , conversion , development , evolution , flux , growth , metamorphosis , metastasis , passage , passing , progress , progression , realignment , shift , transformation , transit , transmutation , turn , turning point , upheaval , change , jump , phase