Meaning of -ON in English


I. ˌän noun suffix

( -s )

Etymology: International Scientific Vocabulary, alteration of -one

: chemical compound not a ketone or other oxo compound

nerv on

— sometimes distinguished from -one

II. noun suffix

( -s )

Etymology: from -on (in anion, cation, & ion )

1. : elementary particle

nucle on


a. : unit : quantum

magnet on

phot on

b. : basic hereditary component

cistr on

oper on

III. noun suffix

( -s )

Etymology: New Latin, from Greek, neuter of -os (nominative singular masculine ending of many adjectives)

: inert gas

rad on

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.