Prefix1. (v. t.) To put or fix at the beginning of; as, to prefix a syllable to a word, or a condition to an agreement.
2. (v. t.) To set or appoint beforehand; to settle or establish antecedently.
3. (n.) 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.
Thesaurus Entries
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