pediococcus

noun, plural ped·i·o·coc·ci [ped-ee-uh–kok-sahy, -see] /ˌpɛd i əˈkɒk saɪ, -si/. Bacteriology.

1. any of several spherical, facultatively anaerobic bacteria of the genus Pediococcus, producing acid and clouding in beer and wort.