\Con*ver"sion\, n. [L. conversio: cf. F. conversion.
See {Convert}.]
1. The act of turning or changing from one state or condition
   to another, or the state of being changed; transmutation;
   change.

         Artificial conversion of water into ice. --Bacon.

         The conversion of the aliment into fat. --Arbuthnot.

2. The act of changing one's views or course, as in passing
   from one side, party, or from of religion to another;
   also, the state of being so changed. ``Conversion to
   Christianity.'' --Prescott.

3. (Law) An appropriation of, and dealing with the property
   of another as if it were one's own, without right; as, the
   conversion of a horse.

         Or bring my action of conversion And trover for my
         goods.                                --Hudibras.

4. (Logic) The act of interchanging the terms of a
   proposition, as by putting the subject in the place of the
   predicate, or the contrary.

5. (Math.) A change or reduction of the form or value of a
   proposition; as, the conversion of equations; the
   conversion of proportions.

6. (Mil.)
   (a) A change of front, as a body of troops attacked in the
       flank.
   (b) A change of character or use, as of smoothbore guns
       into rifles.

7. (Theol.) A spiritual and moral change attending a change
   of belief with conviction; a change of heart; a change
   from the service of the world to the service of God; a
   change of the ruling disposition of the soul, involving a
   transformation of the outward life.

         He oft Frequented their assemblies, . . . and to
         them preached Conversion and repentance, as to souls
         In prison under judgments imminent.   --Milton.