v. & n.
v. 1 a tr. make a thorough or dramatic change in the form, outward appearance, character, etc., of. b intr. (often foll. by into, to) undergo such a change. 2 tr. Electr. change the voltage etc. of (a current). 3 tr. Math. change (a mathematical entity) by transformation.
n. Math. & Linguistics the product of a transformation. transformable adj. transformative adj.
[ ME f. OF transformer or L transformare (as TRANS-, FORM) ]