Definitions of Acid [ˈæs ɪd]

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Definition of 'Acid'

Random House Webster's College Dictionary

1. (n.) acid
a compound usu. having a sour taste and capable of neutralizing alkalis and turning blue litmus paper red, 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.

2.  acid
a substance with a sour taste.

3.  acid
biting criticism or sarcasm.

4.  acid
Slang. the drug LSD.

5. (adj.) acid
belonging or pertaining to acids or the anhydrides of acids.

6.  acid
having only a part of the hydrogen of an acid replaced by a metal or its equivalent:
an acid phosphate.

7.  acid
having a pH value of less than 7.

8.  acid
characterized by a high concentration of acid.

9.  acid
sharp or biting to the taste; sour:
acid fruits.

10.  acid
sharp, biting, or ill-natured in mood or manner; caustic:
acid wit.

11.  acid
vividly intense in color:
acid green.

12.  acid
(of igneous rock) rich in silica.

Etymology: (1620–30; < L acidus sour, akin to ācer sharp, acētum vinegar, acicula)

Definition of 'Acid'

Princeton's WordNet

1. (noun) acid
any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt

2. (adj) acid, back breaker, battery-acid, dose, dot, Elvis, loony toons, Lucy in the sky with diamonds, pane, superman, window pane, Zen
street name for lysergic acid diethylamide

3. (adj) acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, virulent, vitriolic
harsh or corrosive in tone
"an acerbic tone piercing otherwise flowery prose"; "a barrage of acid comments"; "her acrid remarks make her many enemies"; "bitter words"; "blistering criticism"; "caustic jokes about political assassination, talk-show hosts and medical ethics"; "a sulfurous denunciation"; "a vitriolic critique"

4. (adj) acidic, acid, acidulent, acidulous
being sour to the taste

5. (adj) acid
having the characteristics of an acid
"an acid reaction"

Definition of 'Acid'

Kernerman English Learner’s Dictionary

1. (noun) acid
a liquid substance that can burn things

Definition of 'Acid'

Webster Dictionary

1. (adj) Acid
sour, sharp, or biting to the taste; tart; having the taste of vinegar: as, acid fruits or liquors. Also fig.: Sour-tempered

2. (adj) Acid
of or pertaining to an acid; as, acid reaction

3. (noun) Acid
a sour substance

4. (noun) Acid
one of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also characterized by the power of destroying the distinctive properties of alkalies or bases, combining with them to form salts, at the same time losing their own peculiar properties. They all contain hydrogen, united with a more negative element or radical, either alone, or more generally with oxygen, and take their names from this negative element or radical. Those which contain no oxygen are sometimes called hydracids in distinction from the others which are called oxygen acids or oxacids

Translation of 'Acid'

Kernerman English Multilingual Dictionary

Sense: (of taste) sharp or sour Lemons and limes are acid fruits.
Afrikaans: suur	Arabic: حامِض	Bulgarian: кисел
Brazilian: ácido	Czech: kyselý	German: sauer
Danish: sure; syrlige	Greek: όξινος	Spanish: ácido
Estonian: hapu	Farsi: تند؛ ترش	Finnish: hapan
French: acide	Hebrew: חָמוּץ	Hindi: तेज़ाब
Croatian: kiselina	Hungarian: savanyú	Indonesian: masam
Icelandic: súr, beiskur	Italian: acido, acida	Japanese: 酸っぱい
Korean: 신맛이 나는	Lithuanian: rūgštus	Latvian: skābs
Malay: rasa masam	Dutch: zuur	Norwegian: sur, besk
Polish: kwaśny	Persian: تند؛ ترش	Pashto: تريخ
Portuguese: ácido	Romanian: acid	Russian: кислый
Slovak: kyslý	Slovenian: kisel	Serbian: kiseo
Swedish: sur, syrlig	Thai: ซึ่งมีรสเผ็ดร้อนหรือเปรี้	Turkish: ekşi
Taiwanese: 酸的	Ukrainian: кислий	Urdu: تیزابی
Vietnamese: chất chua	Chinese: 酸的
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