Adjective "acid" definition and examples

(Acid may not be an adjective, but it can be used as an adjective, click here to find out.)



Definitions and examples


A 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.
  1. mass noun 'traces of acid'
  2. 'It combines with most non-metals at high temperatures and reacts with both acids and alkalis.'
  3. 'The creek began running the color of old blood, poisoned by acids and heavy metals leached from the coal mines.'
  4. 'Railroad crews also were checking the rail lines and a rail car was being sent along the route with a solution of baking soda and water to neutralize the acid.'
  5. 'It also dissolves in most acids and reacts slowly with water to form compounds that tend to be yellowish or green in color.'
  6. 'These same sensors also prevent further stomach contents from entering the duodenum until the stomach acid is neutralized and diluted.'
  7. 'Copper is a moderately reactive metal that dissolves in most acids and alkalis.'
  8. 'Concentrated acids and caustic alkalis should be handled with the greatest care.'
  9. 'The rotting process releases acids which dissolve metals into liquids which leach out of waste dumps and can poison local rivers.'
  10. 'Strong acids are corrosive and this one is no exception; the stomach lining must be constantly renewed as it is eaten away.'
  11. 'Two teenagers were lucky to still have their sight, after they were sprayed in the face with a corrosive acid in an apparently unprovoked attack on Chiswick High Road.'
  12. 'The acid of Mrs Shrewsbury's scorn reached a raw nerve as she pronounced: ‘Men - savages!’'
  13. 'Her tone lacked its previous acid; she almost sounded sincere.'
  14. 'The bitterness and acid in his voice reassured me Peter was still in there, but he was very, very upset.'
A molecule or other species which can donate a proton or accept an electron pair in reactions.
  1. 'Several years ago, it appeared that the only solid acids that could support high proton transport were those based on sulfates or selenates.'
  2. 'Weak acids have dissociable protons like strong acids, but they simply do not dissociate completely.'
The drug LSD.
  1. as modifier 'a bad acid trip'
  2. 'Flashbacks can occur at any time after taking acid, sometimes even after many years.'
  3. 'That heroin and acid were and are illegal didn't seem to stop him.'


Containing acid or having the properties of an acid; having a pH of less than 7.
  1. 'Carrot plants do not grow well in strongly acid soils; therefore, a pH range of 6.0 to 6.8 should be maintained for best results.'
  2. 'If shrubs or trees are native to an area with acid soil and you're growing them in alkaline dirt, sure enough they'll probably become bug infested.'
  3. '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.'
  4. 'Mossy lawns that indicate acid soil may be dressed in late November with powdered chalk or lime at a rate of 8oz per sq yard.'
  5. 'Preziosa has small mophead flowers that are usually a mix of pink, white and red that never get very blue even on acid soils and that turn crimson in autumn.'
  6. 'If you have an acid soil, a good way to rectify the situation is to rake lime into the ground in late winter.'
  7. 'In the case of acid soils, burning decreases acidity, which starts to increase again during the planting period.'
  8. 'Corn is less sensitive than legumes to acid soils.'
  9. 'Space them about 6 feet apart in well-drained, slightly acid soil.'
  10. 'Kochian's lab is also working on finding ways to grow crops on marginal lands such as acid soils, where toxic levels of aluminum limit crop production.'
Sharp-tasting or sour.
  1. 'They rely on a judicious ratio of noodle, meat and/or vegetables to broth and a sophisticated interplay of flavours which might include salty, sour, acid, sweet and spicy - hot.'
  2. 'You can't eat it fresh because it's so acid, but often these highly acid fruits have the best flavour, and it makes the most wonderful fruit drinks, sorbets, ice creams and other things.'
  3. 'It is an acid cherry that provides a bittersweet flavour when fully ripe.'
  4. 'Sour and acid tastes are liked, and are manifest in the use of lime juice, tamarind, etc.'
  5. 'I smiled as sweetly as I could and kissed her cheek as I breathed in the pungent acid aroma.'
  6. 'On the visit to the GP I saw a locum who said I must sit about for the next week, not use the computer, and keep off acid fruits.'
  7. 'William looked down in horror as he tried to keep composure, but the very fear of what his acid remarks could do to this man's mood made him gulp and shift once in his feet.'
  8. 'Ignoring her acid tone, he mumbled, ‘You're very snappy this afternoon.’'
  9. 'The intention here is surely to eliminate ‘producer opera’, about which Sharpe makes some acid remarks.'
  10. 'Asked what he thinks about that constant speculation, the Frenchman's acid response is that his counterpart must have a good agent.'
  11. 'She is dressed in a body-hugging, full-length stripper gown and armed with an acid retort for every smart-aleck remark.'
  12. 'Sadie spat in an acid tone, refusing to even acknowledge that the woman was her mother.'
  13. 'These cases attract great attention, and acid comments from magistrates.'
  14. 'Fired by anger and fear, I spun to face my assailant, acid demands on my lips - and the words died.'
  15. 'Northam's acid comments aside, however, Stoppard falls short of his Shakespeare In Love triumph, while John Barry's soundtrack merely ticks over.'
  16. 'Sometimes he brings his wife, to swap acid comments with the bartender.'
  17. 'an acid green'
  18. 'Throughout, Gozi used muted shades of charcoal-blue and bottle-green with splashes of bright apple, turquoise and acid pink.'
  19. 'She wore an acid green skating dress made by her mother.'
  20. 'White was combined with a rainbow of colours including lilac, baby pink, lemon, acid green and turquoise candy stripes.'
  21. 'The art students brought their acid colour combinations, their lilacs, tangerines and lime greens from abstract painting.'
  22. 'The sky was a dark grey colour, occasionally coloured with deep red and acid green.'
  23. 'Then her eyes started to glow an acid green colour that swirled in her eyes, almost manically. ‘Sweet dreams.’'
  24. 'I see all these colours against a background of acid yellow, with a touch of green for envy, malice and general discontent.'
  25. 'He was tall, about six foot two, with dark hair and acid green eyes.'
  26. 'She reckons you can get away with virtually anything, particularly acid colours.'
  27. 'Using deft brushwork and a palette of acid greens, vibrant pinks and neon blues, Christine Major presents a series of seductive paintings of animals at the Montreal Museum of Fine Arts.'
(of rock, especially lava) containing a relatively high proportion of silica.
  1. 'In the Southern Central Iberian Zone there are minor acid volcanic rocks intercalated with Caradoc-Ashgill limestones.'
  2. 'These deposits are intimately associated with the porphyric parts of intermediate to acid plutons in orogenic belts.'
  3. 'Acraman occurs in the Gawler Range Volcanics, a Mesoproterozoic continental suite of mainly acid lavas and ash flows.'
  4. '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.'
  5. 'The wetting agents typically used in the acid process are relatively rinse- free when compared to alkaline systems.'
  6. 'As it happened, Workington's adherence to acid steelmaking sealed the fate of the ore dock in the next few years.'

More definitions

1. Chemistry. a compound usually having a sour taste and capable of neutralizing alkalis and reddening blue litmus paper, containing hydrogen that can be replaced by a metal or an electropositive group to form a salt, or containing an atom that can accept a pair of electrons from a base. Acids are proton donors that yield hydronium ions in water solution, or electron-pair acceptors that combine with electron-pair donors or bases.

2. a substance with a sour taste.

3. something, as a remar

More examples(as adjective)

"waters can be acid in natures."

"plants can be acid in collaborations."

"faces can be acid with disapprovals."

"rains can be acid."

"secretions can be acid."

More examples++


Early 17th century (in the sense ‘sour-tasting’): from Latin acidus, from acere ‘be sour’.


put the acid on