What is the meaning of transmute?

verb

• Change in outward structure or looks.
  • usage: "He transformed into a monster"; "The salesman metamorphosed into an ugly beetle"
  • synonyms: transform, metamorphose
• Change or alter in form, appearance, or nature.
  • usage: "This experience transformed her completely"; "She transformed the clay into a beautiful sculpture"; "transubstantiate one element into another"
  • synonyms: transform, transubstantiate
• Alter the nature of (elements. ).