acidify

The word "acidify" is a modern scientific formation built upon classical components. Its core, "acid," originates from the Latin adjective "acidus," meaning sour or tart, which itself derives from the verb "acere," to be sour. The suffix "-ify" entered English via Old French from the Latin "-ificare," a combination of "-ficus" (making) and the verb-forming element "facere" (to do or make). Therefore, the literal construction "acidify" transparently means "to make sour" or "to cause to become acidic," a meaning that has been precisely retained in its modern chemical usage to describe the process of increasing acidity.

Structure: acid (sour substance) + ify (to make) - acid: From Latin 'acidus' (sour, tart). In this word, it functions as the core root denoting the property of acidity. - ify: A verb-forming suffix from Latin '-ificare', via French '-ifier', meaning "to make, to cause to become".