WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / N / naphthoquinone naphthoquinone noun 14 letters Scrabble 31 WWF 34 Definitions noun a fat-soluble vitamin that helps in the clotting of blood antihemorrhagic factorvitamin k Look “naphthoquinone” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →