bacterial

bacteria +‎ -al

• IPA^(key): [bækˈtɪəɹɪəɫ]

bacterial (not comparable)

1. (microbiology) Of, relating to, or caused by bacteria.
   • 2013 July 20, “Welcome to the plastisphere”, in The Economist, volume 408, number 8845:

     [The researchers] noticed many of their pieces of [plastic marine] debris sported surface pits around two microns across. Such pits are about the size of a bacterial cell. Closer examination showed that some of these pits did, indeed, contain bacteria, […].

• bacterio-

• calibrate

bacterial (plural bacteriales)

1. bacterial