- to fix to the beginning of a word, etc.; esp., to add as a prefix
- Rare to fix beforehand
Origin of prefixMiddle English prefyxen from Middle French prefixer from Classical Latin praefixus, past participle of praefigere from prae-, before (see pre-) + figere, to fix
- a syllable, group of syllables, or word joined to the beginning of another word or a base to alter its meaning or create a new word (Ex.: pre- in precool, un- in unsure)
- a title that is placed before a person's name, as Dr.
- an identifying letter or number placed before another number, etc.
Origin of prefixModL praefixum < neut. of L praefixus: see prefixthe transitive verb