[1] : The Collaborative International Dictionary of English v.0.48

prefix \prefix"\, v. t. imp.  p. p. prefixed; p. pr.  vb.
   n. prefixing. l. praefixus, p. p. of praefigere to fix or
   fasten before; prae before + figere to fix: cf. f. pr'efix
   fixed beforehand, determined, pr'efixer to prefix. see
   fix.
   1913 webster
   1. to put or fix before, or at the beginning of, another
      thing; as, to prefix a syllable to a word, or a condition
      to an agreement.
      1913 webster

   2. to set or appoint beforehand; to settle or establish
      antecedently. obs. " prefixed bounds. " --locke.
      1913 webster

            and now he hath to her prefixt a day. --spenser.
      1913 webster
see also:
prefixed prefixing 

[2] : The Collaborative International Dictionary of English v.0.48

prefix \pre"fix\, n. cf. f. pr'efixe.
   that which is prefixed; esp., one or more letters or
   syllables combined or united with the beginning of a word to
   modify its signification; as, pre- in prefix, con- in
   conjure.
   1913 webster

[3] : WordNet (r) 2.0

prefix
     n : an affix that added in front of the word
     v : attach a prefix to; "prefixed words" ant: suffix
see also:
suffix 

[4] : Moby Thesaurus II by Grady Ward, 1.0

137 moby thesaurus words for "prefix":
   ic analysis, accidence, add, adjoin, affix, affixation,
   agglutinate, allomorph, allonge, annex, anteriority, append,
   appendix, attach, avant-propos, bold front, bound morpheme,
   brave face, brave front, breakthrough, burden, coda, codicil,
   commentary, complicate, conjoin, conjugation, cutting, declension,
   decorate, derivation, difference of form, display, enclitic,
   encumber, envoi, epilogue, exordium, facade, face, facet, facia,
   fore, forefront, foreground, forehand, foreland, forepart,
   forequarter, foreside, foreword, formative, free form, front,
   front elevation, front man, front matter, front page, front view,
   frontage, frontal, frontier, frontispiece, glue on, head, heading,
   hitch on, immediate constituent analysis, infix, infixation,
   inflection, innovation, interlineation, interpolation, introduce,
   introduction, join with, lap, leap, marginalia, morph, morpheme,
   morphemic analysis, morphemics, morphology, morphophonemics, note,
   obverse, ornament, overture, paradigm, paste on, plus, postfix,
   postscript, postulate, preamble, preface, prefixation, prefixture,
   preliminary, prelude, premise, presupposition, priority, proclitic,
   proem, prolegomena, prolegomenon, prolepsis, prologize, prologue,
   proscenium, protasis, put with, radical, rider, root, saddle with,
   scholia, slap on, stem, subjoin, suffix, suffixation, superadd,
   superpose, tack on, tag, tag on, tail, theme, unite with, verse,
   voluntary, window dressing, word-formation

[5] : The Free On-line Dictionary of Computing (27 SEP 03)

prefix
     
        1.  the standard metric prefixes used in the système
        international si conventions for scientific measurement.
     
        here are the si magnifying prefixes, along with the
        corresponding binary interpretations in common use:
     
         prefix abr decimal  binary
     
         yocto-     1000^-8
         zepto-     1000^-7
         atto-      1000^-6
         femto-  f  1000^-5
         pico-   p  1000^-4
         nano-   n  1000^-3
         micro-    1000^-2           abbreviation: greek mu
         milli-  m  1000^-1
     
         kilo- 	 k  1000^1  1024^1 = 2^10 = 1,024
         mega- 	 m  1000^2  1024^2 = 2^20 = 1,048,576
         giga- 	 g  1000^3  1024^3 = 2^30 = 1,073,741,824
         tera- 	 t  1000^4  1024^4 = 2^40 = 1,099,511,627,776
         peta- 	    1000^5  1024^5 = 2^50 = 1,125,899,906,842,624
         exa-  	    1000^6  1024^6 = 2^60 = 1,152,921,504,606,846,976
         zetta-     1000^7  1024^7 = 2^70 = 1,180,591,620,717,411,303,424
         yotta-     1000^8  1024^8 = 2^80 = 1,208,925,819,614,629,174,706,176
     
        "femto" and "atto" derive not from greek but from danish.
     
        the abbreviated forms of these prefixes are common in
        electronics and physics.
     
        when used with bytes of storage, these prefixes usually denote
        multiplication by powers of 1024 = 2^10 k, m, and g are
        common in computing.  thus "mb" stands for megabytes 2^20
        bytes.  this common practice goes against the edicts of the
        bipm who deprecate the use of these prefixes for powers of
        two.  the formal si prefix for 1000 is lower case "k"; some,
        including this dictionary, use this strictly, reserving upper
        case "k" for multiplication by 1024 kb is thus "kilobytes".
     
        also, in data transfer rates the prefixes stand for powers of
        ten so, for example, 28.8 kb/s means 28,800 bits per second.
     
        in speech, the unit is often dropped so one may talk of "a 40k
        salary" 40000 dollars or "2m of disk space" 22^20 bytes.
     
        the accepted pronunciation of the initial g of "giga-" was
        once soft, /ji'ga/ like "gigantic", but now the hard
        pronunciation, /gi'ga/, is probably more common.  is this
        true of commonwealth countries?
     
        confusing 1000 and 1024 or other powers of 2 and 10 close in
        magnitude - for example, describing a memory in units of 500k
        or 524k instead of 512k - is a sure sign of the marketroid.
        for example, 3.5" microfloppies are often described as
        storing "1.44 mb".  in fact, this is completely specious.  the
        correct size is 1440 kb = 1440  1024 = 1474560 bytes.  alas,
        this point is probably lost on the world forever.
     
        in 1993, hacker morgan burke proposed, to general approval on
        usenet, the following additional prefixes: groucho 10^-30,
        harpo 10^-27, harpi 10^27, grouchi 10^30.  this would
        leave the prefixes zeppo-, gummo-, and chico- available for
        future expansion.  sadly, there is little immediate prospect
        that mr. burke's eminently sensible proposal will be ratified.
     
        2.  related to the prefix notation.
     
        2003-05-06
     
     
see also:
système international bipm marketroid microfloppies usenet prefix notation 

Prefix >> P Words
Prefix, definition of term: Prefix
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