The Collaborative International Dictionary of English v.0.48:

Abalienation \Ab*al`ien*a"tion\ (-[=a]l`yen*[=a]"sh[u^]n), n.
   [L. abalienatio: cf. F. abali['e]nation.]
   The act of abalienating; alienation; estrangement. [Obs.]
   [1913 Webster]