Word Study
acidity
CIDE DICTIONARY
acidity, n. [L. acidites, fr. acidus: cf. F. acidité. See Acid.].
The quality of being sour; sourness; tartness; sharpness to the taste; as, the acidity of lemon juice. [1913 Webster]
OXFORD DICTIONARY
acidity, n. (pl. -ies) an acid quality or state, esp. an excessively acid condition of the stomach.
THESAURUS
acidity
acerbity, acescency, acid, acidness, acidulousness, acridity, acrimony, agent, alkali, alkalinity, alloisomer, animosity, anion, antacid, asperity, astringency, atom, base, bile, biochemical, bite, bitingness, bitter resentment, bitterness, bitterness of spirit, cation, causticity, causticness, chemical, chemical element, choler, chromoisomer, compound, copolymer, corrosiveness, cuttingness, dimer, dryness, edge, element, fierceness, gall, gnashing of teeth, greenness, grip, hard feelings, harshness, heartburning, heavy chemicals, high polymer, homopolymer, hydracid, hyperacidity, incisiveness, inorganic chemical, ion, isomer, keenness, macromolecule, metamer, molecule, monomer, mordacity, mordancy, neutralizer, nonacid, organic chemical, oxyacid, piercingness, piquancy, poignancy, point, polymer, pseudoisomer, pungency, radical, rancor, rankling, reagent, rigor, roughness, severity, sharpness, slow burn, soreness, sour, sourishness, sourness, spleen, stabbingness, sting, stridency, stringency, subacidity, sulfacid, tartishness, tartness, teeth, trenchancy, trimer, unripeness, unsweetness, vehemence, verjuice, vinegariness, vinegarishness, violence, virulenceROGET THESAURUS
acidity
Sourness
N sourness, acid, acidity, low pH, acetous fermentation, lactic fermentation, vinegar, verjuice, crab, alum, acetic acid, lactic acid, sour, acid, acidulous, acidulated, tart, crabbed, acetous, acetose, acerb, acetic, sour as vinegar, sourish, acescent, subacid, styptic, hard, rough, sour as a lemon, (4) Odor.For further exploring for "acidity" in Webster Dictionary Online