bacteria,
bacterium (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered to be plants
moneran,
moneron organisms that typically reproduce by asexual budding or fission and whose nutritional mode is absorption or photosynthesis or chemosynthesis
division eubacteria one-celled monerans having simple cells with rigid walls and (in motile types) flagella
bacillus,
b aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
cocci,
coccus any spherical or nearly spherical bacteria
coccobacillus a bacterial cell intermediate in morphology between a coccus and a bacillus; a very short bacillus
spirilla,
spirillum any flagellated aerobic bacteria having a spirally twisted rodlike form
clostridia,
clostridium spindle-shaped bacterial cell especially one swollen at the center by an endospore
clostridium perfringens anaerobic Gram-positive rod bacterium that produces epsilon toxin; can be used as a bioweapon
blue-green algae,
cyanobacteria predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyll; occur singly or in colonies in diverse habitats; important as phytoplankton
rickettsia any of a group of very small rod-shaped bacteria that live in biting arthropods (as ticks and mites) and cause disease in vertebrate hosts; they cause typhus and other febrile diseases in human beings
chlamydia coccoid rickettsia infesting birds and mammals; cause infections of eyes and lungs and genitourinary tract
mycoplasma any of a group of small parasitic bacteria that lack cell walls and can survive without oxygen; can cause pneumonia and urinary tract infection
actinomycete any bacteria (some of which are pathogenic for humans and animals) belonging to the order Actinomycetales
actinomyces soil-inhabiting saprophytes and disease-producing plant and animal parasites
