potassium nitrate potassium manganate • potassium oxalate · · · Info · Definitions · Synonyms · Characters · · potassium nitrate · · Text Common · · Latin · · Scripts 17 · · Length Definitions · · · (noun) (KNO3) used especially as a fertilizer and explosive. Synonyms: saltpeter, saltpetre, niter, nitre. · · Noun Definition 1 Synonyms · · · potassium · · Synonym 1 k · · Synonym 2 atomic number 19 · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075