13 letters · 15 points in Scrabble
noun an act that changes the form or character or substance of something
noun a qualitative change
noun (physics) the change of one chemical element into another (as by nuclear decay or radioactive bombardment)
originLate 14th century, from Old French transmutacion (“transformation, metamorphosis”), from Late Latin transmutationem, from Latin transmutare (“to change”).
Etymology from Wiktionary, CC BY-SA 3.0