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Longman Dictionary of Contemporary English
deleterious
adjective
COLLOCATIONS FROM CORPUS
■ NOUN
effect
▪ It is not possible, of course, to be certain of the extent of their deleterious effect without a great deal more investigation.
▪ Therefore it appears that hypertension has an additive deleterious effect on overall prognosis in the diabetic.
▪ Parental divorce has often been assumed to have deleterious effects on children.
▪ Almost always, these have a deleterious effect on the textile material, and they should be excluded.
▪ These are poor in nutrients and their peaty soils have little capacity to absorb any more acid without deleterious effects.
▪ In contrast, ethanol and acetaldehyde did not have any apparent deleterious effect on lysosomal stability.
▪ Kinmond and colleagues' study suggests that a short delay may improve outcome without any obvious deleterious effects.
▪ As Appendix Table A. 10 shows, in the communities studies, rising maternal age has an increasingly deleterious effect on viability.
mutation
▪ Now, suppose that deleterious mutations reduce survival below this optimal value.
▪ Senescence of clones is probably caused by the accumulation of deleterious mutations.
▪ Furthermore, the total rate of production of deleterious mutations and their pattern of age-specificity are unknown.
▪ Suppose now that deleterious mutations are age-specific.
EXAMPLES FROM CORPUS
▪ Almost always, these have a deleterious effect on the textile material, and they should be excluded.
▪ However, it is never too late to stop a damaging practice that has a deleterious impact upon the Catholic community.
▪ In contrast, ethanol and acetaldehyde did not have any apparent deleterious effect on lysosomal stability.
▪ Now, suppose that deleterious mutations reduce survival below this optimal value.
▪ Parental divorce has often been assumed to have deleterious effects on children.
▪ Therefore it appears that hypertension has an additive deleterious effect on overall prognosis in the diabetic.
▪ These are poor in nutrients and their peaty soils have little capacity to absorb any more acid without deleterious effects.
▪ Thus a possible deleterious effect of hyperinsulinaemia may be the inhibition of prostacyclin production by arterial wall.
The Collaborative International Dictionary
Deleterious

Deleterious \Del`e*te"ri*ous\,

  1. [LL. deleterius noxious, Gr. dhlhth`rios, fr. dhlei^sqai to hurt, damage; pro

  2. akin to L. delere to destroy.] Hurtful; noxious; destructive; pernicious; as, a deleterious plant or quality; a deleterious example. -- Del`e*te"ri*ous*ly, adv. -- Del`e*te"ri*ous*ness, n.

Douglas Harper's Etymology Dictionary
deleterious

1640s, from Medieval Latin deleterius, from Greek deleterios "noxious," from deleter "destroyer," from deleisthai "to hurt, injure." Related: Deleteriously; deleteriousness.

Wiktionary
deleterious

a. harmful often in a subtle or unexpected way (as for example ''deleterious'' effects, ''deleterious'' to health).

WordNet
deleterious

adj. harmful to living things; "deleterious chemical additives" [syn: hurtful, injurious]

Usage examples of "deleterious".

Many days I painted drunk, but drunkenness had no deleterious effect on the muralif anything, it sharpened my comprehension of what I was about.

It is a necessary agent in depuration, or the process of purifying the animal economy, for it dissolves and holds in solution deleterious matter, which in this state may be expelled from the body.

The Council assigned something like a third of the resources available for science to biological work, and it does not seem to have occurred to these rulers of the world, preoccupied as they were with the suppression, the excessive suppression, the obliteration even, of deleterious and antiquated separatist doctrines and the refashioning of economic life, that this huge growth of biological enquiry would result in anything more than the extinction of plant and animal diseases, and improvements and economies in cultivation.

In the instance now alluded to, and probably in all other cases, the deleterious mixture had been caused ignorantly, by the adulteration of the anotta employed for colouring the cheese.

Six Shillings a bottle--A Settler near Parramatta having procured a small still from England, obtained a deleterious and mischievous spirit from his Wheat, which he found more profitable than carrying it to the public store, and selling it for ten Shillings per bushell.

Only some few of our native Ferns are known to possess medicinal virtues, though they may all be happily pronounced devoid of poisonous or deleterious properties.

Don Juan extrapolated from the occurrence that an ally had the capacity to intervene directly and withhold the deleterious, and usually fatal, effect resulting from noncompliance with its rule.

I had not planned how I would kill Espinal, but the realization that certain of the aerials had a deleterious effect upon the body inspired me to think that exposing him to the ravages of the blackhearts, luring them to him in some way and watching them drain him of energy, that would be a most fitting end for the man.

Mrs Proudie to herself, who had contrived to learn various very deleterious circumstances respecting the Hartletop family since the news about Lord Dumbello and Griselda had become known to her.

One day while I was attending a class at the university, I heard the voice say, over and over, that any attempt on my part to end my dreaming practices would be deleterious to my total aims.

The head pharmacien of the Hotel Dieu, in his analysis of the fluid effused in puerperal peritonitis, says that practitioners are convinced of its deleterious qualities, and that it is very dangerous to apply it to the denuded skin.

Micro-organisms, generally, display a negative chemotaxis, which enables them to respond to a deleterious alteration in the • We think with sardonic amusement of the moth who seems so stupidly to fly into a flame that kills it, but movement toward the light is generally adaptive behavior.

The essay subject this week had been “One man's meat is another man's poison", and Clowes, whose idea of English Essay was that it should be a medium for intempestive frivolity, had insisted on his beginning with, “While I cannot conscientiously go so far as to say that one man's meat is another man's poison, yet I am certainly of opinion that what is highly beneficial to one man may, on the other hand, to another man, differently constituted, be extremely deleterious, and, indeed, absolutely fatal.

Spared Desi the Second's more deleterious culinary fare, refreshed by large amounts of wholesome, restorative food, exercise, and a decent night's sleep without spiders crawling up the walls, all the members of the unit were fully recovered and in exuberant spirits.

Not that there was anything actively poisonous or even especially deleterious about the pills and potions put out by the Ashville Pharmacal factorythe Food and Drug Administration would have seen to that, even without the help of Mr Ashville's unreconstructed consciencebut neither would they do anyone much good, other than psychologically.