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Pronunciation varies by accent · noun
Any bacterium of the class Betaproteobacteria.
Use betaproteobacterium when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Betaproteobacterium means Any bacterium of the class Betaproteobacteria.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use betaproteobacterium where its definition matches the intended context.
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