单词	corrode
释义	corrodecor‧rode /kəˈrəʊd $ -ˈroʊd/ verb [intransitive, transitive] Word Origin WORD ORIGINcorrode Origin: 1300-1400 Latin corrodere ‘to eat away’, from com- ( ➔ COM-) + rodere ( ➔ RODENT) Verb Table VERB TABLE corrode Simple Form Present they corrode it corrodes Past it, they corroded Present perfect they have corroded it has corroded Past perfect it, they had corroded Future it, they will corrode Future perfect it, they will have corroded Continuous Form Present they are corroding it is corroding Past they were corroding it was corroding Present perfect they have been corroding it has been corroding Past perfect it, they had been corroding Future it, they will be corroding Future perfect it, they will have been corroding Examples EXAMPLES FROM OTHER DICTIONARIES Acid can corrode most metals. Acid rain has corroded the statue. By the time they found the wreckage of the plane, it had already started to corrode. If the batteries leak, they can corrode the case of your flashlight. Over the years, rain, wind, and sun had corroded the statue, turning the bronze a bright green. Salt corrodes metal. The pipework was badly corroded in places. EXAMPLES FROM THE CORPUS Beyond the stadium were the corroding hulks of the Bronx. It's not been in the water long enough to corrode. It was in a brass frame, corroded from the steam of coffee and spilled Cokes. So the sewage goes septic, giving off hydrogen sulphide which corrodes the pipes and makes a nasty smell. The Hmong with whom they worked had radio equipment that was corroded, antique, unserviceable. The system would corrode and crumble. Theserevelations corrode public faith in democracy. We think she corroded for only a matter of weeks before being colonised. Thesaurus Longman Language Activatorwhen weather/water/chemicals etc slowly damage something► wear away if the wind, rain, sea etc wears something away , it very gradually destroys its surface until there is nothing left: wear away something: · The action of the sea is constantly wearing away the cliff face.wear something away: · Environmentalists are concerned that rock climbers are wearing the crags away in some places.get worn away: · The cathedral steps were getting worn away by the feet of thousands of visitors. ► erode if water, wind, air etc erodes rock, land, soil etc, it gradually damages it over a long time by removing little pieces of it: · Caves are formed by water eroding rock.· If the river is not controlled, it will erode its banks as well as the surrounding farmland. ► corrode if a chemical corrodes something metal, it damages it and makes it gradually disappear or become weaker: · Salt corrodes metal.· If the batteries leak, they can corrode the case of your flashlight.· The pipework was badly corroded in places. ► rust/rust away if something made of iron rusts , it is gradually damaged by a chemical reaction with water and turns red-brown in colour: · The iron crosses that marked the graves had rusted badly over the years.· The underside of the car had virtually rusted away. to decay► decay if something decays , it is gradually destroyed by chemical changes - use this about dead plants or flesh, fruit or wood, or teeth: · Freezing conditions will stop most things from decaying.· Some of the apples lying on the ground had already begun to decay.· In a warm climate where flesh decays rapidly, there is more risk of infection from dead animals.· If you eat too many sweets, it'll make your teeth decay. ► rot to decay - use this especially about wood, vegetables, plants etc: · If water gets inside the woodwork, it causes it to rot.leave something to rot: · In some countries food is left to rot, while in others people are dying from hunger.rot away (=rot until it becomes extremely weak or gradually disappears): · The roof had fallen in and the floor had completely rotted away. ► decompose to decay and gradually break up - use this about dead plants or flesh: · As household refuse decomposes, it produces an explosive gas, methane.· A dead fish in the aquarium will decompose rapidly, fouling the water badly. ► go mouldy British /go moldy American if food goes mouldy , a soft green or black substance starts to grow on the surface, and it is not good to eat any more: · Throw that bread away. It's gone mouldy.· If you don't keep cheese in the fridge, it goes mouldy very quickly. ► rust if something made of iron rusts , it decays by becoming brown and rough, losing its strength, especially because it has not been protected from the damaging effects of water: · Several of the pipes have rusted and will need to be replaced.rust away (=rust until something begins to break into pieces): · Parts of the floor of the car had simply rusted away. ► corrode if metal corrodes , it decays by becoming weak and changing its colour, especially because it has not been protected from the damaging effects of chemicals: · By the time they found the wreckage of the plane, it had already started to corrode. to make something decay► rot · Bedtime drinks aimed at helping children to sleep may be rotting their teeth.rot something away · If you leave any water in the bottom of the boat, it'll slowly rot it away. ► corrode if a chemical or chemical process corrodes a metal, it makes it decay: · Acid can corrode most metals.· Over the years, rain, wind, and sun had corroded the statue, turning the bronze a bright green. something that has decayed► rotten something that is rotten has decayed badly and often smells unpleasant - use this especially about wood, fruit, vegetables, plants etc: · There was a disgusting smell in the house - a bit like rotten eggs.· I wouldn't climb that tree if I were you - some of the branches look rotten.· a pile of rotten apples ► decayed decayed objects and materials are ones that are gradually being destroyed by natural chemical changes: · Bees will often build their nests in decayed wood.· Sixty years ago, the average 4 year old had 7 decayed or missing teeth.· Even the stonework on the old house was decayed and crumbling. ► decomposed decomposed flesh or plants are dead and are gradually being broken up and destroyed by natural chemical changes: decomposed body/remains: · The girl's decomposed body had been in the water for a long time.badly/partially/half decomposed: · Coal is the partially decomposed remains of forests that covered the earth millions of years ago.· Both men's bodies were badly decomposed. ► mouldy British /moldy American something that is mouldy has a soft green or black substance growing on its surface: · All there was in the fridge was a piece of mouldy cheese and some tomatoes.· The cupboards were damp and full of moldy old clothes.go mouldy: · This pizza's so old it's gone mouldy! ► rusty rusty metal has become rough and brown because it is decaying, especially because it has not been protected from the damaging effects of water and air: · A rusty old car had been abandoned at the side of the road.· I opened the rusty iron gate and walked up the path.· The bicycle looked a bit rusty, but it worked. ► corroded metal that is corroded has become weak and has changed colour, especially because it has not been protected from the damaging effects of chemicals, water, and air: · You should never use leaking or corroded batteries.· Badly corroded metal gutters and downpipes should be replaced by the plastic type. WORD SETS► Chemistry acetate, nounacid, nounacidic, adjectiveacidify, verbactive, adjectiveadditive, nounagent, nounalchemy, nounalcohol, nounalkali, nounalkaline, adjectiveamalgam, nounantioxidant, noun-ate, suffixatomic number, nounbase, nounbauxite, nounbeaker, nounbenzene, nounbiochemistry, nounbitumen, nounbleach, nounbond, nounbonding, nouncalcify, verbcarbohydrate, nouncarbonate, nouncarbon dioxide, nouncarbonize, verbcatalyst, nouncaustic, adjectivechain reaction, nounchemical, nounchemical, adjectivechemical reaction, nounchemist, nounchemistry, nounchlorinate, verbcitric acid, nouncombustion, nounconcentration, nouncondense, verbcontaminant, nouncontaminate, verbcontaminated, adjectivecorrode, verbcorrosion, nouncorrosive, adjectivecrucible, nouncrystal, nouncrystallize, verbcyanide, nounDDT, noundecay, verbdecay, noundecompose, verbdegrade, verbderive, verbdetoxification, noundextrose, noundioxin, noundispersion, noundissolve, verbdistill, verbeffervesce, verbeffervescent, adjectiveelectrolysis, nounelectrolyte, nounelectroplate, verbemulsify, verbemulsion, nounenzyme, nounexpand, verbfatty acid, nounferment, verbferment, nounflashback, nounflask, nounformaldehyde, nounformula, nounfructose, nounfungicide, nounfuse, verbgas, noungaseous, adjectiveglucose, noungranular, adjectivegraphite, nounhallucinogen, nounhelium, nounherbicide, nounhydrate, nouninert, adjectiveinsoluble, adjectiveinsulin, nounion, nounionize, verblactic acid, nounlimescale, nounlitmus, nounlitmus paper, nounlitmus test, nounmethane, nounmixture, nounmolecule, nounneon, nounnerve gas, nounneutralize, verbneutron, nounnitric acid, nounnucleic acid, nounnucleus, nounnutrient, nounorganic chemistry, nounosmosis, nounoxidize, verboxyacetylene, nounoxygenate, verbozone, nounpart, nounpectin, nounpesticide, nounpestle, nounpetrochemical, nounpH, nounphotosynthesis, nounplasma, nounpolyunsaturated, adjectivepotash, nounprecipitate, verbprecipitate, nounprecipitation, nounproduct, nounprussic acid, nounquicklime, nounradioactive, adjectiveradioactivity, nounradiology, nounreact, verbreaction, nounreactive, adjectivereagent, nounresidue, nounretort, nounriboflavin, nounsalt, nounsaltpetre, nounsaturate, verbsaturated, adjectivesaturation, nounsaturation point, nounsemiconductor, nounsoft, adjectivesolid, nounsolution, nounsolvent, nounstability, nounstabilizer, nounstable, adjectivestarch, nounsteam, nounsucrose, nounsulphate, nounsulphide, nounsulphur, nounsulphur dioxide, nounsulphuric acid, nounsulphurous, adjectivesurface tension, nounsuspension, nounsynthesize, verbsynthetic, adjectivetannin, nountartaric acid, nounTNT, noununstable, adjectivevalence, nounvitamin, nounvolatile, adjectivevulcanize, verbwater softener, nounwater-soluble, adjectivewater vapour, nounwetting agent, noun 1if metal corrodes, or if something corrodes it, it is slowly destroyed by the effect of water, chemicals etc:  Acidic water will corrode the pipes.2 written to gradually make something weaker or destroy it completely:  Corruption has corroded our confidence in the police force.
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