argonon argonne forest • argos · · · Info · Definitions · Synonyms · Characters · · argonon · · Text Latin · · Script 7 · · Length 3 · · Syllables Definitions · · · (noun) any of the chemically inert gaseous elements of the helium group in the periodic table. Synonyms: noble gas, inert gas. · · Noun Definition 1 Synonyms · · · noble gas · · Synonym 1 inert gas · · Synonym 2 Characters · · a latin small letter a U+0061 g latin small letter g U+0067 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072