Webster's English Dictionary

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selection

Cross references:
  1. choice                
 
se.lec.tion \s*-'lek-sh*n\ n 1: the act or process of selecting : the state 
   of being selected  2: one that is selected : CHOICE; also : a collection of 
   se lected things 3: a natural or artificial process that prevents or tends 
   to prevent some i ndividuals or groups of organisms from surviving and 
   propagating and allows others to do so