The definition of alienation is the state of a person who has disengaged themselves or have been alienated from the attentions from a person, place, or thing they once enjoyed.
(noun)An example of alienation is when a cheating wife is discovered by her husband, and he can no longer stand to be around her so he files for divorce.
See alienation in Webster's New World College Dictionary
noun
Origin: ME & OFr < L alienatio, separation, aversion, aberration (of the mind): see alienate
See alienation in American Heritage Dictionary 4
noun
Learn more about alienation