Bacteria

[множественное число] от bacterium

Большой англо-русский словарь

Bacteria

множественное число от bacterium

Англо-русский словарь компьютерных терминов

Bacteria

noun (plural bacteria; also -rias) Etymology: plural of bacterium bacterium — not usually used technically Usage: Bacteria is regularly a plural in scientific and pedagogical use; in speech and in journalism it is also used as a singular, and it is sometimes pluralized as bacterias Example: caused by a bacteria borne by certain tiny ticks — Wall Street Journal Example: more resistant to chlorine and elevated water temperatures than other bacterias — Allan Bruckheim, M.D., Chicago Tribune. These journalistic uses are found in British as well as American sources.

Merriam-Webster's Collegiate Dictionary