LEARNit Dictionary
bacteria
noun
/bækˈtɪəriə/
UK
/bækˈtɪriə/
US
B2
1
the simplest and smallest forms of life. Bacteria exist in large numbers in air, water and soil, and also in living and dead creatures and plants, and are often a cause of disease.
باکتری, ریزجاندار, ریزاندامگان