Bacterial (adjective)

1. Relating to or caused by bacteria.
2. Of or relating to bacteria.

Origin:

Derived from the noun 'bacterium', which was formed from the greek word 'baktērion' meaning 'small rod'.

Examples:

1. The bacterial infection spread rapidly through the population.
2. The results of the bacterial culture indicated the presence of harmful bacteria.
3. Bacterial diseases like tuberculosis, cholera and diphtheria can be life-threatening.
4. Bacterial fermentation is used to make yogurt, cheese and other fermented foods.
5. A bacterial imbalance in the gut has been linked to various health problems.