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1. Oxford American Dictionary

   acid

   • IPA[ˈasəd]

   美式

   • n.
     a chemical substance that neutralizes alkalis, dissolves some metals, and turns litmus red; typically, a corrosive or sour-tasting liquid of this kind.；bitter or cutting remarks or tone of voice
   • adj.
     containing acid or having the properties of an acid; having a pH of less than 7.；sharp-tasting or sour

   • noun: acid, plural noun: acids

2. • 釋義

   n.

   名詞

   • 1. a chemical substance that neutralizes alkalis, dissolves some metals, and turns litmus red; typically, a corrosive or sour-tasting liquid of this kind. traces of acid rainwater is a very weak acid
   • ▪ bitter or cutting remarks or tone of voice she was unable to quell the acid in her voice
   • 2. a molecule or other entity that can donate a proton or accept an electron pair in reactions.
   • 3. informal the drug LSD she didn't have a clue the candy had acid in it a bad acid trip

   adj.

   形容詞

   • 1. containing acid or having the properties of an acid; having a pH of less than 7. poor, acid soils
   • 2. sharp-tasting or sour acid fruit 同義詞 acidic, sour, tart, bitter, unsweetened, ... 更多sharp, biting, acrid, pungent, acerbic, vinegary, vinegarish, acetic, acetous, rareacidulous, acidulated反義詞 sweet
   • ▪ (of a person's remarks or tone) bitter or cutting she was stung into acid defiance 同義詞 acerbic, sarcastic, sharp, sardonic, satirical, ... 更多scathing, cutting, razor-edged, incisive, penetrating, piercing, biting, stinging, searing, keen, caustic, trenchant, mordant, bitter, acrimonious, astringent, harsh, severe, abrasive, wounding, hurtful, unkind, cruel, vitriolic, virulent, venomous, poisonous, waspish, spiteful, vicious, malicious, acerb, informalbitchy, catty, sarky, snarky, raremordacious, acidulous反義詞 kind, pleasant, complimentary
   • ▪ (of a color) intense or bright an acid green
   • 3. (of rock, especially lava) containing a relatively high proportion of silica the magma may start off fairly basic and end up at the close of the eruption much more acid
   • ▪ relating to or denoting steelmaking processes involving silica-rich refractories and slags the acid Bessemer process