bacterial


Concise Oxford English Dictionary © 2008 Oxford University Press:
bacterium /bakˈtɪərɪəm/
noun (pl. bacteria /-rɪə/) a member of a large group of unicellular microorganisms (prokaryotes) which have cell walls but lack an organized nucleus and other structures, and include numerous disease-causing forms.
– derivatives
bacterial adjective,
bacterially adverb.
– origin C19: mod. L., from Gk baktērion, dimin. of baktēria ‘rod, cane’ (because the first ones to be discovered were rod-shaped).
usage: Bacteria, the plural form of bacterium, is sometimes mistakenly treated as a singular form.
'bacterial' also found in these Oxford entries:

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