an event that results in a transformation

a change in the units or form of an expression:

a successful free throw or try for point after a touchdown

a spiritual enlightenment causing a person to lead a new life

(psychiatry) a defense mechanism represses emotional conflicts which are then converted into physical symptoms that have no organic basis

a change of religion

interchange of subject and predicate of a proposition

act of exchanging one type of money or security for another

the act of changing from one use or function or purpose to another