occurring in words borrowed from French and other Romance languages (bassoon; balloon; dragoon; pontoon),
and on this model
occasionally used in the formation of new nouns
in English (spittoon).
as an English formative (e.g., in spittoon), extracted from words of various origins (buffoon, lagoon, etc.) but representing chiefly French -on in words stressed on the final syllable; compare Spanish -on, Italian -one, Latin -ōn-