a combining form meaning “bacteria,” used in the formation of compound words: bactericide; bacteriuria.
Also bacter-, bacterio-.
Origin of bacteri-
< Greek baktḗrion little staff; see bacterium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
bacteri- or sometimes before a vowel bacter-
indicating bacteria or an action or condition relating to or characteristic of bacteriabacteriology; bactericide; bacteroid
Word Origin for bacterio-
New Latin, from bacteria
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