A substance, organism, or device that performs denitrification; something that removes nitrogen compounds.
From denitrify + -ator (extended agent suffix, variant of -or). Used in technical contexts for something more elaborate than a simple denitrificant.
The '-ator' version sounds more impressive and technical than '-ant,' which is why scientists use 'denitrificator' in formal papers while '-ant' appears in simpler contexts.
Complete word intelligence in one call. Free tier — 50 lookups/day.