Neisseria gonorrhoeae

Etymology
Neisseria gonorrhoeae:

neisseria: "Neisser" (named for its discoverer, Albert Neisser)

gonorrhoeae: "gonorrhea" (named after the disease, gonorrhea)

gono: "semen" (from greek γόνος (gonos), meaning "semen")

rrhoea: "flow" (from greek ῥοία (roia), meaning "flux" or "flow")

Explanation
The bacteria Neisseria gonorrhoeae was named after the bacteriologist who discovered it (Neisser), and because it is a sexually transmitted bacteria, that is responsible for the infection "Gonorrhea" (gonorrhoeae). Gonorrhea is itself named because it causes an excessive discharge or flow (rrhoea) of a whitish fluid from the penis or vagina, which isn't semen (gono), but it looks somewhat like it.

Synonyms
gonococcus (sg), gonococci (pl)