Noun
Act of abandoning a person or cause to which one is bound by allegiance or duty, or to which one has attached himself; desertion; failure in duty; a falling away; apostasy; backsliding.
Source: Webster's dictionary...not one rebel defection - not even Robert E. Lee's - cost young Adams a personal pang; but Sumner's struck home. Henry Adams
Tony Blair faced a massive defection from his own party ranks during voting around the intervention in Iraq. For our present purpose, the point is not that he survived the defection, but that he had to face it. Stockwell Day
For a nice strategy to be collectively stable, it must be provoked by the very first defection of the other player. Robert Axelrod
The advice takes the form of four simple suggestions for how to do well in a durable iterated Prisoner's Dilemma:1. Don't be envious. 2. Don't be the first to defect. 3. Reciprocate both cooperation and defection. 4. Don't be too clever. Robert Axelrod
The effect of Pacepa's defection on Ceausescu's mental state was to destabilise him even more. He became quite crazy for a time and suffered a further, permanent loss of proportion. What talent there remained in his circle was removed in the whitch-hunt that followed the defection. John Sweeney (journalist)
his abandonment of his wife and children left them penniless Source: Internet