n.
Function: transitive verb
Etymology: Middle English, from Middle French prefixer, from Latin praefixus
Date: 15th century
1 \ ( ˌ )pr ē - ' fiks \ : to fix or appoint beforehand
2 \ ' pr ē - ˌ , pr ē - ' \ [partly from 2 prefix ] : to place in front especially : to add as a prefix < prefix a syllable to a word>