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Definition of MYCOPLASMA
: any of a genus (Mycoplasma of the family Mycoplasmataceae) of pleomorphic gram-negative chiefly nonmotile bacteria that lack a cell wall and are mostly parasitic usually in mammals —called also pleuropneumonia-like organism
Origin of MYCOPLASMA
First Known Use: 1955
Medical Definition of MYCOPLASMA
capitalized: the type genus of the family Mycoplasmataceae containing minute pleomorphic gram-negative chiefly nonmotile bacteria that are mostly parasitic usually in mammals—see pleuropneumonia 2
pluralmy·co·plas·masalsomy·co·plas·ma·ta\-mət-ə\: any bacterium of the genus Mycoplasma or of the family Mycoplasmataceae—called also pleuropneumonia-like organism, PPLO
Any of the bacteria that make up the genus Mycoplasma. They are among the smallest of bacterial organisms. The cell varies from a spherical or pear shape to that of a slender branched filament. Mycoplasma species are gram-negative (seegram stain) and do not require oxygen. They are colonial microorganisms that lack cell walls. They are parasites of joints and the mucous membranes lining the respiratory, genital, or digestive tracts of cud-chewing animals, carnivores, rodents, and humans. Toxic by-products excreted by the bacteria accumulate in the hosts tissues, causing damage. One species causes a widespread but rarely fatal pneumonia in humans.