Becoming sour or acidic; tending to turn into vinegar or develop a sour taste.
From Latin 'acescens,' the present participle of 'acescere' (to turn sour). The '-ent' ending indicates a current or ongoing process, making this the adjective form describing something actively souring.
When wine or juice is labeled 'acescent,' it means harmful bacteria are winning the chemistry war—the acetic acid bacteria are converting alcohol into vinegar. It's why old wine bottles sometimes disappoint: they've become accidentally vinegar!
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