1 the act or an instance of transmuting or changing into another form etc.
2 Alchemy hist. the supposed process of changing base metals into gold.
3 Physics the changing of one element into another by nuclear bombardment etc.
4 Geom. the changing of a figure or body into another of the same area or volume.
5 Biol. Lamarck's theory of the change of one species into another.
Derivatives:
transmutational adj. transmutationist n.
Etymology: ME f. OF transmutation or LL transmutatio (as TRANSMUTE)
Useful english dictionary. 2012.