An organism or agent that performs denitrification, removing or converting nitrogen compounds.
From denitrify + -ier (agent suffix variant). The -ier ending often appears in technical terms and sometimes in occupation nouns like 'soldier' or 'chandelier.'
Denitrifiers are usually bacteria living in soil—they're nature's recycling team, converting excess nitrates back into nitrogen gas, which is why they're crucial for environmental cleanup.
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