pseu·​do·​mo·​nad ˌsü-də-ˈmō-ˌnad How to pronounce pseudomonad (audio)
: any of a genus (Pseudomonas) of gram-negative rod-shaped motile bacteria including some that produce a greenish fluorescent water-soluble pigment and some that are saprophytes or plant or animal pathogens

Examples of pseudomonad in a Sentence

Recent Examples on the Web One species of bacteria that grows in the rhizosphere of birch roots is a fluorescent pseudomonad. Richard Schiffman, Scientific American, 4 May 2021

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'pseudomonad.' 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 Pseudomonad-, Pseudomonas

First Known Use

1921, in the meaning defined above

Time Traveler
The first known use of pseudomonad was in 1921

Dictionary Entries Near pseudomonad

Cite this Entry

“Pseudomonad.” Dictionary, Merriam-Webster, Accessed 4 Oct. 2023.

Medical Definition


pseu·​do·​mo·​nad ˌsüd-ə-ˈmō-ˌnad, -nəd How to pronounce pseudomonad (audio)
: any bacterium of the genus Pseudomonas

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