n. 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. transmutational adj. transmutationist n.
[ ME f. OF transmutation or LL transmutatio (as TRANSMUTE) ]