| Amoeba (n.) A rhizopod. common in fresh water, capable of undergoing many changes of form at will. See Rhizopoda. Thesaurus Entries Euglena, adenovirus, aerobe, aerobic bacteria, anaerobe, anaerobic bacteria, animalcule, bacillus, bacteria, bacterium, bug, coccus, colon bacillus, diatom, disease-producing microorganism, dyad, echovirus, enterovirus, filterable virus, flagellate, fungus, germ, gram-negative bacteria, gram-positive bacteria, microbe, microorganism, microspore, microzoa, mold, monad, nematode, nonfilterable virus, paramecium, pathogen, picornavirus, protozoa, protozoon, reovirus, rhinovirus, rickettsia, salmonella, saprophyte, spirillum, spirochete, spore, sporozoon, staphylococcus, streptococcus, tetrad, triad, trypanosome, vibrio, virus, volvox, vorticellum, zoospore |