1. (n.) A change into another substance.

2. (n.) The doctrine held by Roman Catholics, that the bread and wine in the Mass is converted into the body and blood of Christ; -- distinguished from consubstantiation, and impanation.

assimilation avatar basal metabolism catabolism catalysis consubstantiation displacement heterotopia metabolism metagenesis metamorphism metamorphosis metastasis metathesis metempsychosis mutant mutated form mutation permutation reincarnation sport transanimation transfiguration transfigurement transformation transformism translation translocation transmigration transmogrification transmutation transposition transubstantiation