D defs.my
Entry 3 senses Webster, 1913

Transmutation

· Trans·mu·ta·tion · IPA /tɹanzmjuːˈteɪʃn̩/
01 n. The act of transmuting, or the state of being transmuted; as, the transmutation of metals.
  1. 1.
    The act of transmuting, or the state of being transmuted; as, the transmutation of metals.
  2. 2.
    The change or reduction of one figure or body into another of the same area or solidity, but of a different form, as of a triangle into a square.(Geom.) [R.]
  3. 3.
    The change of one species into another, which is assumed to take place in any development theory of life; transformism.(Biol.)
Phrases & compounds
Transmutation of metals — the conversion of base metals into gold or silver, a process often attempted by the alchemists. See Alchemy, and Philosopher's stone, under Philosopher.