THESAURUS
microorganism
Euglena, adenovirus, aerobe, aerobic bacteria, aerobic organism, amoeba, anaerobe, anaerobic bacteria, anaerobic organism, animalcule, autotrophic organism, bacillus, bacteria, bacterium, being, bug, coccus, colon bacillus, creature, crumb, diatom, disease-producing
microorganism, dot, drop, droplet, dyad, echovirus, enterovirus, filterable virus, flagellate, fleck, flyspeck, fungus, genetic individual, germ, gnat, grain, gram-negative bacteria, gram-positive bacteria, heterotrophic organism, individual, iota, jot, living being, living thing, microbe, microspore, microzoa, midge, minim, minutia, minutiae, mite, mold, monad, morphological individual, mote, nematode, nonfilterable virus, ont, organic being, organism, organization, paramecium, particle, pathogen, physiological individual, picornavirus, pinhead, pinpoint, point, protozoa, protozoon, reovirus, rhinovirus, rickettsia, salmonella, saprophyte, scrap, snip, snippet, speck, spirillum, spirochete, spore, sporozoon, staphylococcus, streptococcus, tetrad, tittle, triad, trypanosome, vanishing point, vibrio, virus, volvox, vorticellum, zooid, zoon, zoospore