(n): the act of changing something into something different in essential characteristics
(n): an event that results in a transformation
(n): a qualitative change
(n): a change from one place or state or subject or stage to another
(n): an event that occurs when something passes from one state or phase to another
(n): a musical passage moving from one key to another
(n): a short section of a musical composition
(n): a passage that connects a topic to one that follows
(n): a section of text; particularly a section of medium length
(v): cause to convert or undergo a transition
(v): change the nature, purpose, or function of something
(v): make or undergo a transition (from one state or system to another)
(v): lay aside, abandon, or leave for another
1975 Aviation Week & Space Technol. 6 Jan. 43/3 Transitioning to the advanced displays from the basic dial indicators found in standard aircraft sometimes causes minor confusion.