WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / N / nitrogen dioxide nitrogen dioxide noun /naɪtrədʒəndaɪɑksaɪd/ 5 syllables 16 letters Scrabble 25 WWF 28 Definitions noun a highly poisonous brown gas (NO2) Look “nitrogen dioxide” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →