actinomyces

noun, plural ac·tin·o·my·ces. Bacteriology.

1. any of several saprophytic, filamentous, anaerobic bacteria of the genus Actinomyces, certain species of which are pathogenic for humans and animals.

n.

1. A genus of nonmotile, non-spore-producing, anaerobic to facultatively anaerobic bacteria pathogenic to humans.