An example of prefix is adding extra to ordinary, creating extraordinary.
Origin of prefix
- Middle English prefixen from Old French prefixer pre- before (from Latin prae- pre–) fixer to place (from Latin fīxus) (past participle of fīgere to fasten dhīgw- in Indo-European roots) N., from New Latin praefīxum from neuter sing. of Latin praefīxus past participle of praefīgere to fix in front prae- pre- fīgere to fasten
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle French prefixer (verb) and Late Latin praefixum (noun), both from Latin praefixus, past participle of praefÄ«gō (“I (fix, fasten, set up) in front", “I fix on the (end, extremity)") (from prae- (“before") + fÄ«gō (“I fix", “I fasten", “I affix")).