gonyaulax

noun
go·​ny·​au·​lax | \ ˌgō-nē-ˈȯ-ˌlaks How to pronounce gonyaulax (audio) \

Medical Definition of gonyaulax

1 capitalized : a large genus of phosphorescent marine dinoflagellates that when unusually abundant cause red tide
2 : any dinoflagellate of the genus Gonyaulax