Dictionary
9 ENTRIES FOUND:

bacterium

noun bac·te·ri·um \bak-ˈtir-ē-əm\

: any one of a group of very small living things that often cause disease

plural -ria \-ē-ə\

Full Definition of BACTERIUM

:  any of a domain (Bacteria) of prokaryotic round, spiral, or rod-shaped single-celled microorganisms that may lack cell walls or are gram-positive or gram-negative if they have cell walls, that are often aggregated into colonies or motile by means of flagella, that typically live in soil, water, organic matter, or the bodies of plants and animals, that are usually autotrophic, saprophytic, or parasitic in nutrition, and that are noted for their biochemical effects and pathogenicity; broadly :  prokaryote — compare archaea, eukaryote

Origin of BACTERIUM

New Latin, from Greek baktērion staff
First Known Use: circa 1849

Other Microbiology Terms

pathogen, salmonella, tetanus

bacterium

noun bac·te·ri·um \bak-ˈtir-ē-əm\   (Medical Dictionary)
plural -ria \-ē-ə\

Medical Definition of BACTERIUM

:  any of a domain (Bacteria) of prokaryotic round, spiral, or rod-shaped single-celled microorganisms that may lack cell walls or are gram-positive or gram-negative if they have cell walls, that are often aggregated into colonies or motile by means of flagella, that typically live in soil, water, organic matter, or the bodies of plants and animals, that are usually autotrophic, saprophytic, or parasitic in nutrition, and that are noted for their biochemical effects and pathogenicity; broadly :  prokaryote

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