A single-celled organism that can exist either as an independent organism or as a parasite.

जीवाणु

English Usage: The bacterium E. coli is commonly found in the intestines of humans.

Hindi Usage: E. coli जीवाणु मानवों की आंतों में सामान्यतः पाया जाता है।

A salt or ester of nitrous acid containing the anion NO2−.