tran·si·tion
[tran-zish-uh‘n, -sish-]
noun
1.movement, passage, or change from one position, state, stage, subject, concept, etc., to another; change: the transition from adolescence to adulthood.
2.Music.
a.a passing from one key to another; modulation.
b.a brief modulation; a modulation used in passing.
c.a sudden, unprepared modulation.
3.a passage from one scene to another by sound effects, music, etc., as in a television program, theatrical production, or the like.
verb (used without object)
4. to make a transition: He had difficulty transitioning from enlisted man to officer.
Synonyms
1. changeover, passing, conversion.