—n.
1 a verbal element placed at the beginning of a word to adjust or qualify its meaning (e.g. ex-, non-, re-) or (in some languages) as an inflectional formative.
2 a title placed before a name (e.g. Mr).
—v.tr. (often foll. by to)
1 add as an introduction.
2 join (a word or element) as a prefix.
Derivatives:
prefixation n. prefixion n.
Etymology: earlier as verb: ME f. OF prefixer (as PRE-, FIX): (n.) f. L praefixum
Useful english dictionary. 2012.