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TOEFL IELTS BNC: 6007 COCA: 7931

decay

Word family 
Related topics: Biology, Chemistry
de·cay1 /dɪˈkeɪ/ ●●○ verb  
1  [intransitiveI, transitiveT]DECAY to be slowly destroyed by a natural chemical process, or to make something do this （使）腐烂；（使）变坏
 Her body was already starting to decay.
她的尸体已经开始腐烂。
 Most archaeological finds are broken, damaged, or decayed.
大部分考古发现物都已破裂、损坏或腐烂。
 decaying organic matter
腐烂的有机物
 Register
In everyday English, people usually say rot rather than decay when talking about food: 在日常英语中,人们谈论食物一般说 rot ,而不用 decay
There was a smell of rotting vegetables.
有股蔬菜腐烂的味道。
2  [intransitiveI]DECAY if buildings, structures, or areas decay, their condition gradually becomes worse 〔建筑、结构或地区〕破败，毁坏
 Hundreds of historic buildings are being allowed to decay.
数百幢历史建筑被任由破败。
 Britain’s decaying inner cities
英国破败的旧城区
3  [intransitiveI]LESS if traditional beliefs, standards etc decay, people do not believe in them or support them anymore 〔传统观念、标准等〕失去影响力，衰败，衰落 SYN decline
 In Orthodox Europe, mass religion seems to have decayed less.
在正教会流行的欧洲地区，集体宗教信仰的影响力似乎衰退得没那么严重。
n THESAURUS
decay to be slowly destroyed by a natural chemical process – use this especially about natural things such as wood or plants, or about teeth
The leaves decay and enrich the soil.
He had bad breath and decaying teeth.
The fabric slowly began to decay.
rot to decay. Rot is less formal than decay and is more common in everyday English
The fruit was left to rot on the ground.
rotting teeth
Most of the wood under the paint had rotted.
the smell of rotting vegetation (=decaying leaves and plants)
go off British EnglishBrE if food goes off, it starts to smell bad and is no longer be safe to eat
I think the milk’s gone off.
The meat smells as if it's gone off.
spoil if food spoils, it starts to decay, so that it is no longer safe to eat. Spoil is more formal and is less common in everyday British English than go off
Food left in the sun will quickly start to spoil.
go mouldy British EnglishBrE, moldy American EnglishAmE to begin to have a soft green or black substance growing on the surface of the food, so that it is not good to eat anymore
Ugh, the cheese has gone mouldy!
decompose formal to decay – use this especially about dead plants or flesh
leaves decomposing on the forest floor
putrefy formal to decay and have a very bad smell – use this especially about flesh or plants
After two days, the body was already beginning to putrefy.
putrefying meat
biodegrade to decay naturally into substances that do not harm the environment – use this especially about man-made materials and chemicals
Unlike many other materials, plastic does not biodegrade.
Examples from the Corpus
decay• Freezing conditions will stop most things from decaying.• Now even elections seem to be decaying.• If you eat too many sweets, it'll make your teeth decay.• Some of the apples lying on the ground had already begun to decay.• A few species laid eggs beneath mounds of rotten vegetation that warmed as it decayed.• Bones signify the eternal being which does not decay.• There was now not the slightest doubt that Hsu was decaying and losing her structural integrity.• The decaying body of a man was found in a vacant warehouse.• It decays by a scheme that has two paths.• This decaying city was once the busiest port in the world.• However, objects decay despite our best efforts to conserve them.• the decaying moral values of American society• In a warm climate where flesh decays rapidly, there is more risk of infection from dead animals.• In one path, the 40K decays to a calcium isotope, 40Ca.• The buildings still stand, slowly decaying, without past or future, or any links with the surrounding land.
Related topics: Biology, Chemistry
decay2 ●●○ noun [uncountableU]  
1  DECAYthe natural chemical change that causes the slow destruction of something 腐烂，朽烂
 old cars in various stages of decay
损坏程度不等的旧车
 tooth decay
蛀牙
2  DESTROYthe gradual destruction of buildings, structures etc because they have not been cared for 〔疏于管理而造成建筑物等的〕破败，衰败
 poverty and urban decay
贫穷和市区的破败
fall into (a state of) decay
 During the war, the area fell into decay.
战争期间这个地区衰败了。
3  LESSthe gradual destruction of ideas, beliefs, social or political systems etc 〔观念、信仰、社会制度、政治制度等的〕衰退，没落
 moral decay
道德的败坏
n COLLOCATIONS
verbs
cause decay
Bacteria stick to food and cause decay.
prevent decay
You can use a preservative on the wood to prevent further decay.
ADJECTIVES/NOUN + decay
tooth/dental decay
Eating too much sugar causes tooth decay.
natural decay
Everything in our environment is subject to natural decay.
phrases
the process of decay
The natural processes of decay gradually destroys archaeological sites.
a sign of decay
I couldn't see any signs of decay on the fruit.
Examples from the Corpus
decay• And it's the bodily imperfections and decay which lead us to desire a permanence of the human essence.• I have noticed decay in some of the floorboards.• Tiny organisms that live in the soil assist the process of decay.• Now, however, the great Latin cities fell prey to widespread depopulation, economic decline, and physical decay.• Without renewal, decay becomes irredeemable.• But nomatterwhat cosmetics we use, what exercises we do, the decay of our bodies moves inexorably forward.• The decay constant F includes any process that destroys c1, c2 or their correlation.• the decay of the central government in Russia• Brushing your teeth regularly helps to fight against tooth decay.• Its rough surface traps the microflora responsible for halitosis and tooth decay.• An optimistic theory of evolutionary progress was surreptitiously beginning to replace the pessimistic doctrine of universal decay.
stages of decay• The place was littered with barbed wire and rotting lumber and a dozen old boats in various stages of decay.• The organic matter in soil consists of plant and animal debris or waste in varying stages of decay.
fall into (a state of) decay• From the time of Laurence little work was carried out on the Palace and it was again allowed to fall into decay.
Origin decay1
(1400-1500) Old North French decaïr, from Late Latin decadere “to fall, sink”
de·cay1 verb →REGISTER1 →n THESAURUS1decay2 noun →n COLLOCATIONS1
LDOCE Online
Chinese
Syllable
Corpus
TOEFL IELTS BNC: 6007 COCA: 7931
decay

noun

ADJECTIVE | VERB + DECAY | PREPOSITION | PHRASES ADJECTIVE➤rapid迅速腐爛▸➤slow慢慢腐爛▸➤dental, tooth蛀牙▸➤industrial, urban工業衰敗；城市衰落▸➤moral, physical, social道德敗壞；身體衰弱；社會衰落VERB + DECAY➤cause導致腐爛◇Bacteria stick to food debris in the teeth, causing decay.細菌附着在牙縫中的食物殘渣上，導致蛀牙。➤stop阻止衰退◇Without a lot of money, the mayor won't be able to stop urban decay.若沒有大量的資金，市長就無法阻止城市的衰落。➤reverse扭轉頹勢◇This government promises to reverse industrial decay.這屆政府承諾扭轉工業衰退的局面。➤prevent防止腐爛◇The wood is treated with preservative to prevent decay.這塊木頭用防腐劑作過防腐處理。➤fall into陷入衰敗狀態◇old buildings that had fallen into decay日趨破敗的舊建築PREPOSITION➤in decay在衰敗中◇The derelict buildings are the signs of a town in decay.這些荒廢的建築兆示着一個城市的衰落。➤decay in⋯的衰退◇Smoking accelerates decay in the heart and arteries.吸煙加速心臟和動脈的老化。➤decay of⋯的衰敗◇the slow decay of the castle and the surrounding buildings城堡和周圍建築物的緩慢破敗PHRASES➤the process of decay衰退過程▸➤signs of decay腐蝕跡象◇My dentist could not find any signs of decay.牙醫找不到我的牙齒有任何蛀蝕的跡象。➤an odour/odor of decay, a smell of decay, a stench of decay腐爛的臭味◇A smell of decay pervaded the air.空氣中瀰漫着一股腐臭味。➤a state of decay衰敗狀態
TOEFL IELTS BNC: 6007 COCA: 7931
TOEFL IELTS BNC: 6007 COCA: 7931
decay
To decay, or to rot: biodegrade, curdle, decay...
To become worse: worsen, decline, deteriorate...
Destruction and damage: damage, destruction, harm...
Signs of damage: a blot on something, blemish, blight...
Changes for the worse: contamination, regression, lapse...

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