What is Autonomy?

Legal Definition
Autonomy (Ancient Greek: αὐτονομία autonomia from αὐτόνομος autonomos from αὐτο- auto- "self" and νόμος nomos, "law", hence when combined understood to mean "one who gives oneself one's own law") is a concept found in moral, political, and bioethical philosophy. Within these contexts, it is the capacity of a rational individual to make an informed, un-coerced decision.
-- Wikipedia
Legal Definition
The political independence of a nation; the right (and condition) of self-government.
-- Black's Law Dictionary
Legal Definition
-- Ballentine's Law Dictionary