Definition of "ex-" []

• Outside; out of; away from: exodontia. (prefix)
• Not; without: excaudate. (prefix)
• Former: ex-president. (prefix)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "An aide to ex-Rep. Giffords, who was wounded at the same event where she was shot, said he will run to fill her seat."
• "Ferran Adrià is not closing El Bulli, the world's ex- best restaurant, tonight, he is simply "changing, moving on … improving", a process that involves, erm, closing it."
• "The people said that an SAC managing director, Michael C. Sullivan , a former staffer for ex-Sen. John Ensign, also cited Mr. Cohen's civic-minded interest in considering purchasing a stake in the New York Mets."