WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / F / factor i factor i noun 8 letters Scrabble 12 WWF 13 Definitions noun a protein present in blood plasma; converts to fibrin when blood clots fibrinogen Look “factor i” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →