Main Entry: ¹pre·fix

Function: transitive verb

Etymology: Middle English, from Middle French prefixer, from Latin praefixus

Date: 15th century

1\(ˌ)prē-ˈfiks\ : to fix or appoint beforehand
2\ˈprē-ˌ, prē-ˈ\ [partly from ²prefix] : to place in front; especially : to add as a prefix <prefix a syllable to a word>