1 tr. a (foll. by to) fit, adjust (one thing to another). b (foll. by to, for) make suitable for a purpose. c alter or modify (esp. a text). d arrange for broadcasting etc.
2 intr. & refl. (usu. foll. by to) become adjusted to new conditions.
Derivatives:
adaptive adj. adaptively adv.
Etymology: F adapter f. L adaptare (as AD-, aptare f. aptus fit)
Useful english dictionary. 2012.