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
2.
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