Definición de acid en inglés:


Saltos de línea: acid
Pronunciación: /ˈasɪd


  • 1A substance with particular chemical properties including turning litmus red, neutralizing alkalis, and dissolving some metals; typically, a corrosive or sour-tasting liquid of this kind: trees were exposed to mixtures of heavy metals, acids, and overdoses of nutrients [mass noun]: traces of acid Often contrasted with alkali and base1.
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    • It can withstand high temperatures and is resistant to many corrosive substances such as acids and alkalis.
    • Zinc is a fairly active metal that dissolves in both acids and strong alkalis.
    • Copper is a moderately reactive metal that dissolves in most acids and alkalis.
  • 1.1 [mass noun] Bitter or cutting remarks or tone of voice: she was unable to quell the acid in her voice
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    • The bitterness and acid in his voice reassured me Peter was still in there, but he was very, very upset.
    • I guess I hadn't spoken with such acid in my tone for a while.
    • Her tone lacked its previous acid; she almost sounded sincere.
  • Acids are compounds which release hydrogen ions (H+) when dissolved in water. Any solution with a pH of less than 7 is acidic, strong acids such as sulphuric or hydrochloric acid having a pH as low as 1 or 2

  • 2 Chemistry A molecule or other species which can donate a proton or accept an electron pair in reactions.
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    • They would like to use their carborane acids to bind protons to atoms of the inert gas xenon.
    • Weak acids have dissociable protons like strong acids, but they simply do not dissociate completely.
    • The acid's active ingredient is positively charged hydrogen, so a transfer of electrons takes place between the zinc and the acid.
  • 3 [mass noun] informal The drug LSD: she didn’t have a clue the sweet had acid in it [as modifier]: a bad acid trip
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    • He has used mescaline, cocaine and acid, although he has not indulged in intravenous drugs.
    • He looked around more, seeing many different things that he would never expect: cocaine, meth and acid.
    • That heroin and acid were and are illegal didn't seem to stop him.


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  • 1Containing acid or having the properties of an acid; having a pH of less than 7: acid soils Often contrasted with alkaline or basic.
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    • In the case of acid soils, burning decreases acidity, which starts to increase again during the planting period.
    • Boxwood prefer slightly acid to slightly alkaline soil and do very well when planted in early fall.
    • It used to be that, if you had a very acid soil, the hydrangeas would be bluer; more alkaline soil, your hydrangeas would be pinker.
  • 3 Geology (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
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    • Acraman occurs in the Gawler Range Volcanics, a Mesoproterozoic continental suite of mainly acid lavas and ash flows.
    • In the Southern Central Iberian Zone there are minor acid volcanic rocks intercalated with Caradoc-Ashgill limestones.
    • These deposits are intimately associated with the porphyric parts of intermediate to acid plutons in orogenic belts.
  • 3.1 Metallurgy Relating to or denoting steel-making processes involving silica-rich refractories and slags: the acid Bessemer process
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    • In the acid processes, deoxidation can take place in the furnaces, leaving a reasonable time for the inclusions to rise into the slag and so be removed before casting.
    • Therefore, a business opportunity could be created for an entrepreneur interested in running the acid separation and purification process.
    • As it happened, Workington's adherence to acid steelmaking sealed the fate of the ore dock in the next few years.


put the acid on

Australian /NZ informal Seek to extract a loan or favour from (someone).
[acid from acid test, referring to possible resistance (because gold resists nitric acid)]
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  • Plans to erect fences around those sectors are underway with Labor Council likely to put the acid on at least 12 Sydney-based councils in the near future.
  • A building inspector, put the acid on a builder for initially $40,000, but reduced it to $20,000 and then foolishly took two cheques each for $10,000.
  • Labour Council will put the acid on the Environment Minister to fund training for delegates and organisers about how they can utilise existing legislation to become frontline environmental watchdogs.



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  • The grilled lemon chicken special was great, and showed that the chef has real skill - there's nothing better than the blend of acidy lemon with a bit of charred poultry.
  • The taste changes to become sweet and a little acidy.
  • There's homemade tzatziki with everything, and it's acidy and flavourful.


early 17th century (in the sense 'sour-tasting'): from Latin acidus, from acere 'be sour'.

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Palabra del día coloratura
Pronunciación: ˌkɒlərəˈtjʊərə
elaborate ornamentation of a vocal melody