Definition of: transition

(tran·zish′ən) noun
1. Passage from one place, condition, or action to another; change.
2. Music A passing modulation, an abrupt change of key, or a passage leading from one theme to another.
3. The time, period, or place of such passage; also, its product or result. See synonyms under CHANGE, MOTION.
—tran·si′tion·al, tran·si′tion·ar′y (-er′ē) adjective
—tran·si′tion·al·ly adverb