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  pro–1 proa  
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   The American Heritage® Dictionary of the English Language: Fourth Edition.  2000.
 
pro–2
 
PREFIX:1a. Earlier; before; prior to: procambium. b. Rudimentary: pronucleus. 2. Anterior; in front of: procephalic.
ETYMOLOGY:Middle English, from Old French, from Greek, from pro, before, in front. See per1 in Appendix I.
 
 
The American Heritage® Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved.

CONTENTS · INDEX · ILLUSTRATIONS · BIBLIOGRAPHIC RECORD
  pro–1 proa  
 
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