meningococcus

noun, plural me·nin·go·coc·ci [muh-ning-goh-kok-sahy, -see] /məˌnɪŋ goʊˈkɒk saɪ, -si/.

1. a reniform or spherical bacterium, Neisseria meningitidis, that causes cerebrospinal meningitis.

noun plural -cocci (-ˈkɒkaɪ)

1. the bacterium that causes cerebrospinal meningitis

n. pl. me•nin•go•coc•ci (-kŏk′sī, -kī)

1. A bacterium (Neisseria meningitidis) that causes cerebrospinal meningitis.