co·​ry·​ne·​bac·​te·​ri·​um ˌkȯr-ə-(ˌ)nē-bak-ˈtir-ē-əm How to pronounce corynebacterium (audio)
: any of a genus (Corynebacterium) of usually gram-positive nonmotile bacteria that occur as irregular or branching rods and include the causative agent of diphtheria
corynebacterial adjective

Examples of corynebacterium in a Sentence

Recent Examples on the Web Some the bacteria identified in the study include staphylococcus, corynebacterium, haemophilus and neisseria. Don Sweeney, miamiherald, 4 Aug. 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'corynebacterium.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


New Latin, from Greek korynē club

First Known Use

1909, in the meaning defined above

Time Traveler
The first known use of corynebacterium was in 1909

Dictionary Entries Near corynebacterium

Cite this Entry

“Corynebacterium.” Dictionary, Merriam-Webster, Accessed 23 Jul. 2024.

Medical Definition


cor·​y·​ne·​bac·​te·​ri·​um -ˈtir-ē-əm How to pronounce corynebacterium (audio)
capitalized : a genus of usually gram-positive, nonmotile bacteria that do not produce spores, occur as irregular or branching rods often banded with metachromatic granules, and include the causative agents of diphtheria and caseous lymphadenitis
plural corynebacteria -ē-ə How to pronounce corynebacterium (audio) : any bacterium of the genus Corynebacterium
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