WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / P / pupillary sphincter pupillary sphincter noun 19 letters Scrabble 32 WWF 38 Definitions noun a ring of smooth muscle surrounding the iris musculus sphincter pupillae Look “pupillary sphincter” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →