Webster's English Dictionary

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prefix

1. pre.fix \(')pre--'fiks\ \'pre--., pre--'\ vt [ME prefixen, fr. MF 
   prefixer, fr. pre- + fixer to fix,] [2prefix] fr. fix fixed, fr. L fixus - 
   more at FIX archaic  1: to fix or appoint beforehand  2: to place before 
2. pre.fix \'pre--.fiks\ \'pre--.fik-s*l, pre--'\ \-s*-le-\ n [NL 
   praefixum, fr. L, neut. of praefixus, pp. of praefigere t]o fasten before, 
   fr. prae- + figere to fasten - more at DIKE 1: a sound or sequence of 
   sounds or in writing a letter or sequence of lett ers occurring as a bound 
   form attached to the beginning of a word, base, or phrase and serving to 
   produce a derivative word or an inflectional form 2: a title used before a 
   person's name  - pre.fix.al aj