The chemical process of removing nitrates from something.
From denitrate + -tion (forming abstract nouns describing processes or states). The -tion suffix comes from Latin -tio and creates nouns for actions or results.
Notice how '-tion' turns 'denitrate' (a verb/action) into 'denitration' (the concept itself)—this suffix is one of English's greatest tools for discussing abstract processes in science.
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