WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / N / nitric oxide nitric oxide noun 3 syllables 12 letters Scrabble 21 WWF 23 Definitions noun a poisonous red-brown gas (NO) Look “nitric oxide” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →