1.an event that results in a transformation
2.a change in the units or form of an expression: "conversion from Fahrenheit to Centigrade"
3.a successful free throw or try for point after a touchdown
4.a spiritual enlightenment causing a person to lead a new life
5.(psychiatry) a defense mechanism represses emotional conflicts which are then converted into physical symptoms that have no organic basis
6.a change of religion;
his conversion to the Catholic faith
7.interchange of subject and predicate of a proposition
8.act of exchanging one type of money or security for another
9.the act of changing from one use or function or purpose to another