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English word acid comes from Proto-Indo-European *h₂ḱ-, Latin -idus ((suffix forming verbs) tending to.)
*h₂ḱ- (Proto-Indo-European)
-idus (Latin)
(suffix forming verbs) tending to.
*akēō (Proto-Italic)
Be sharp-tasting, be sour.
aceo (Latin)
(figuratively, Late Latin) I am disagreeable.. (of wine) I am sour.
acidus (Latin)
(figuratively) disagreeable, unpleasant; sharp, keen, pungent; sharp-tongued. (of sound) harsh, grating, rough, shrill. Sour, tart, acid, bitter.
acide (French)
(chemistry) acid, acidic. Acid, acidic, sour, tart (chemistry) acid. (slang) LSD (acid).
acid (English)
(chemistry) Any of several classes of compound having the following properties:-. (slang) lysergic acid diethylamide (LSD). A sour substance.. Any compound that can accept a pair of electrons to form a covalent bond; a Lewis acid. Any compound that easily donates protons; a Brønsted acid. Any of a class of water-soluble compounds, having sour taste, that turn blue litmus red, and react with [...]