Also found in: Thesaurus, Medical, Encyclopedia.


or bacteri- or bacter-
Bacteria; bacterial: bacteriology.

[From New Latin bactērium, bacterium; see bacterium.]




or sometimes before a vowel


combining form
(Microbiology) indicating bacteria or an action or condition relating to or characteristic of bacteria: bacteriology; bactericide; bacteroid.
[New Latin, from bacteria]


(bækˈtɪər i ə), sing. -te•ri•um (-ˈtɪər i əm)
any of numerous groups of microscopic one-celled organisms constituting the phylum Schizomycota, of the kingdom Monera, various species of which are involved in infectious diseases, nitrogen fixation, fermentation, or putrefaction.
[1905–10; < New Latin < Greek baktḗria, pl. of baktḗrion; see bacterium]
bac•te′ri•al, adj.
bac•te′ri•al•ly, adv.
References in periodicals archive ?
The use of structural characteristics of bacterio- and zoobenthos for quality rating of bottom sediments (by the example of reservoirs of the Upper Volga basin), Water source.
the Bacterio- Therapeutics Company, has enrolled the first subjects into its Phase 2/3 clinical study for the prevention of Antibiotic Associated Diarrhea (AAD).
the Bacterio- Therapeutics company, today announced that Ralph Levy has joined Osel as President.