acid
Longman Dictionary of Contemporary English 5++LDOCE 5++ac·id1 /ˈæsɪd/ ●●○ W3 noun 1 [countable, uncountable]HC a chemical substance that has a pH of less than 7. Strong acids can burn holes in material or damage your skin 酸〔一种化学物质〕 sulphuric acid 硫酸2. MDD[uncountable] informal the drug LSD 迷幻药〔麦角酰二乙胺〕
Examples from the Corpus
acid• We subsequently determined the soluble faecal concentrations of calcium, phosphate, fatty acids, and bile acids.• One factor contributing to this malaise is the buildup of lactic acid in the muscles that can follow heavy drinking.• There was no significant difference between the linoleic acid and the eicosapentaenoic acid supplemented groups.• A chronometer is hidden within all words, and in each length of nucleic acid.• Some of these complexes form immensely complicated sequences of nucleic acids which begin to replicate themselves.• Saturated hydrocarbons can burn to aldehydes, alcohols to organic acids, and aromatics to unsaturated compounds which are pungent and irritating.• But amygdalin reacts with an enzyme in the almond to produce glucose and two very characteristic compounds, benzaldehyde and prussic acid.• Inject a minimum of 10 gallons of sulfuric acid.• sulfuric acidacid2 adjective 1 CThaving a sharp sour taste 酸的，酸味的 SYN bitter a juicy apple with a slightly acid flavour 一个多汁、略带酸味的苹果2 acid remark/comment/tone etc CRITICIZEan acid remark uses humour in an unkind way to criticize someone 尖酸刻薄的话/评论/口吻等 I was expecting another of his acid remarks, but he remained silent. 我等着他再说一句刻薄的话，但他不吭声了。3 the acid test PROVEa way of finding out whether something is as good as people say it is, whether it works, or whether it is true 决定性的考验 People ask if the team is good enough. This match will be the acid test. 人们问这支球队是不是够好，经过这场比赛的考验就可见分晓。4 technicalTAS an acid soil does not contain much lime1(3) 〔土壤〕酸性的 Blueberry bushes need a very acid soil. 蓝莓的生长需要强酸性土壤。 —acidity /əˈsɪdəti/ noun [uncountable]Examples from the Corpus
acid• Because of acid rain, this Scandinavian lake is now too acid to support fish.• Smog and acid rain, water pollution and sewage disposal, dams and river-flows will become ever more contentious issues.• Sulphur goes on to produce acid rain.• In general, ferns like organically enriched, moist but well-draining soil on the acid side.Origin acid2 (1600-1700) French acide, from Latin acidus, from acere “to be sour”ac·id1 nounacid2 adjectiveChineseSyllable
a substance that chemical Corpus has a
acid
ac‧id1 W3 /ˈæsəd, ˈæsɪd/ 
noun
1. [uncountable and countable] a chemical substance that has a pH of less than 7. Strong acids can burn holes in material or damage your skin:
sulphuric acid
2. [uncountable] informal the drug LSD
acid2 adjective
SYN bitter:
a juicy apple with a slightly acid flavour
2. acid remark/comment/tone etc an acid remark uses humour in an unkind way to criticize someone:
I was expecting another of his acid remarks, but he remained silent.
3. the acid test a way of finding out whether something is as good as people say it is, whether it works, or whether it is true:
People ask if the team is good enough. This match will be the acid test.
4. technical an acid soil does not contain much lime1(3):
Blueberry bushes need a very acid soil.
—acidity /əˈsɪdəti, əˈsɪdɪti/ noun [uncountable]
| I |
noun1. [uncountable and countable] a chemical substance that has a pH of less than 7. Strong acids can burn holes in material or damage your skin:
2. [uncountable] informal the drug LSD
| II |
adjective Date: 1600-1700
Language: French
Origin: acide, from Latin acidus, from acere 'to be sour'
1. having a sharp sour taste Language: French
Origin: acide, from Latin acidus, from acere 'to be sour'
SYN bitter:
2. acid remark/comment/tone etc an acid remark uses humour in an unkind way to criticize someone:
3. the acid test a way of finding out whether something is as good as people say it is, whether it works, or whether it is true:
4. technical an acid soil does not contain much lime1(3):
—acidity /əˈsɪdəti, əˈsɪdɪti/ noun [uncountable]
bitter (of a taste or smell) strong and usually unpleasant; (of food or drink) having a bitter taste 指（味道或气味）强烈的、令人不适的，（食物或饮料）味苦的 pungent (of a smell or taste) strong and usually unpleasant; (of food or smoke) having a pungent smell or taste 指（气味或味道）强烈的、令人不适的，（食物）味苦的，（烟）呛人的、刺鼻的 ：◆ the pungent smell of burning rubber 烧橡胶的刺鼻气味 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 指（味道）酸的，（食物或饮料）有酸味的 ：◆ Too much pulp produces a sour wine. 过多的果肉会让酒变酸。 acrid (of a smell or taste) strong and unpleasant; (of smoke) having an acrid smell 指（气味或味道）刺激的、难闻的，（烟）呛人的、刺鼻的 ：◆ acrid smoke from burning tyres 燃烧轮胎产生的熏烟 sharp (of a taste or smell) strong and slightly bitter; (of food or drink) having a sharp taste 指（味道或气味）强烈而略苦的、刺鼻的，（食物或饮料）味苦的、辛辣的 ：◆ The cheese has a distinctively sharp taste. 这奶酪味道很冲。 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 指（味道）酸的，（气味）有刺激性的，（食物或饮料）有酸味的
which word? 词语辨析
A bitter taste is usually unpleasant, but some people enjoy the bitter flavour of coffee or chocolate. No other word can describe this flavour. Asharp orpungent flavour is more strong than unpleasant, especially when describing cheese.Sharp ,sour andacid all describe the taste of a lemon or a fruit that is not ripe. Anacrid smell is strong and unpleasant, especially the smell of smoke or burning, but not the smell of food.* bitter 指味道通常为苦的、令人不快的，有人却喜欢咖啡或巧克力的苦味。没有其他词可用来形容这种味道。sharp 或 pungent 主要强调味道强烈而非令人不快，在描述奶酪的味道时尤其如此。sharp、sour 和 acid 均形容柠檬或未熟水果的酸味。acrid 指气味强烈而令人不快，尤指烟味或燃烧产生的气味，但不用来形容食物的气味。
Patterns
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