Tra từ acid - Từ điển Oxford Advanced Learner 8th

acid [acid acids] noun, adjective BrE [ˈæsɪd] NAmE [ˈæsɪd]
noun
1. uncountable, countable (chemistry)a chemical, usually a liquid, that contains ↑hydrogen and has a pH of less than seven. The ↑hydrogen can be replaced by a metal to form a salt. Acids are usually sour and can often burn holes in or damage things they touch.
compare ↑alkali
see also ↑acetic acid, ↑amino acid, ↑ascorbic acid, ↑citric acid, ↑hydrochloric acid, ↑lactic acid, ↑nitric acid, ↑nucleic acid, ↑sulphuric acid
2. uncountable (slang) = ↑LSD

Word Origin:
early 17th cent. (in the sense ‘sour-tasting’): from Latin acidus, from acere ‘be sour’.

Example Bank:
•He described the music as ‘Brahms on acid’.
•Stomach acids can break down the poison.
•The acid burned a hole in her coat.
•They smoke joints and drop acid.
•You will need a special chemical to neutralize the acid.
•fish that are rich in omega-3 fatty acids
•smoking joints and dropping acid
•the increasingly painful build-up of lactic acid in your muscles

adjective
1. (technical)that contains acid or has the essential characteristics of an acid; that has a pH of less than seven
• Rye is tolerant of poor, acid soils.
compare ↑alkaline
2. that has a bitter sharp taste
Syn: ↑sour
•acid fruit
3. (of a person's remarks)critical and unkind
Syn: ↑sarcastic, Syn: ↑cutting
•an acid wit

Word Origin:
early 17th cent. (in the sense ‘sour-tasting’): from Latin acidus, from acere ‘be sour’.

Synonyms:
bitter
pungent • sour • acrid • sharp • acid
These words all describe a strong, unpleasant taste or smell.
bitter • (of a taste or smell) strong and usually unpleasant; (of food or drink) having a bitter taste.
pungent • (of a smell or taste) strong and usually unpleasant; (of food or smoke) having a pungent smell or taste: ▪ the pungent smell of burning rubber
sour • (of a taste) bitter like the taste of a lemon or of fruit that is not ripe; (of food or drink) having a sour taste: ▪ Too much pulp produces a sour wine.
acrid • (of a smell or taste) strong and unpleasant; (of smoke) having an acrid smell: ▪ acrid smoke from burning tyres
sharp • (of a taste or smell) strong and slightly bitter; (of food or drink) having a sharp taste: ▪ The cheese has a distinctively sharp taste.
acid • (of a taste or smell) bitter, like the taste of a lemon or of fruit that is not ripe; (of food or drink) having an acid taste.
which word?
A bitter taste is usually unpleasant, but some people enjoy the bitter flavour of coffee or chocolate. No other word can describe this flavour. A sharp or pungent flavour is more strong than unpleasant, especially when describing cheese. Sharp, sour and acid all describe the taste of a lemon or a fruit that is not ripe. An acrid smell is strong and unpleasant, especially the smell of smoke or burning, but not the smell of food.
a(n) bitter/pungent/sour/acrid/sharp/acid taste/flavour
a(n) bitter/pungent/acrid/sharp/acid smell/odour
a(n) bitter/sour/sharp/acid fruit
pungent/sharp cheese
pungent/acrid smoke

Example Bank:
•It's a very juicy fruit with a slightly acid flavour.