The definition of bacteria are microorganisms that are the basis of fermentation and infectious diseases.(noun)
An example of bacteria are the organisms that cause common human illnesses like strep throat.
See bacteria in Webster's New World College Dictionary
Origin: ModL, pl. of bacterium < Gr baktērion, dim. of baktron, a staff: see bacillus
See bacteria in American Heritage Dictionary 4
See bacteria in Ologies
the branch of biology that studies and classifies bacteria. —bacteriologist, n. —bacteriologic, bacteriological, adj.
a strong resistance by bacteria to absorbing stains. —chromatophobic, adj.
a bacterium that grows well in the presence of hemoglobin. —hemophilic, adj.
the branch of biology that studies microorganisms, including bacteria, viruses, fungi, and pathogenic protozoa. —microbiologist, n.
an abnormal fear of microorganisms. —microphobic, adj.
Learn more about bacteria