[{"word":"ammonium","phonetic":"/əˈmoʊni.əm/","phonetics":[{"text":"/əˈmoʊni.əm/","audio":""}],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"The univalent NH4+ cation, derived by the protonation of ammonia","synonyms":[],"antonyms":[]},{"definition":"(especially in combination) Any similar cation formed by replacing one or more hydrogen atoms with alkyl or aryl radicals","synonyms":[],"antonyms":[]}],"synonyms":[],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/ammonium"]}]