Ducrey's bacillus

noun

Du·​crey's bacillus dü-ˈkrāz- How to pronounce Ducrey's bacillus (audio)
: a gram-negative bacillus of the genus Haemophilus (H. ducreyi) that is the causative agent of chancroid

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duck sickness
Ducrey's bacillus
duct
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“Ducrey's bacillus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Ducrey%27s%20bacillus. Accessed 31 Oct. 2025.

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