Naegleria

noun

Nae·​gle·​ria nā-ˈglir-ē-ə 

: a genus of diphasic amoeboid protozoans that are characterized by a predominate amoeboid stage and a minute flagellate stage with two flagella, that occur especially in stagnant water and are often coprozoic, and that include one (N. fowleri) causing meningoencephalitis in humans