gymnodinium

[jim-nuh-din-ee-uh m]

noun, plural gym·no·din·i·a

[jim-nuh-din-ee-uh] /ˌdʒɪm nəˈdɪn i ə/.

any marine or freshwater dinoflagellate of the genus Gymnodinium, certain species of which cause red tide.

Origin of gymnodinium

< New Latin, equivalent to gymno- gymno- + Greek dī́n(ein) to whirl + New Latin -ium -ium