• WordNet 3.6
    • adj deleterious harmful to living things "deleterious chemical additives"
    • ***
Webster's Revised Unabridged Dictionary
    • a Deleterious Hurtful; noxious; destructive; pernicious; as, a deleterious plant or quality; a deleterious example.
    • ***
Century Dictionary and Cyclopedia
    • deleterious Having the quality of destroying life; noxious; poisonous: as, a deleterious plant.
    • deleterious Hurtful in character or quality; injurious; pernicious; mischievous; unwholesome: as, a deleterious practice; deleterious food.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Deleterious del-e-tē′ri-us tending to destroy life: hurtful or destructive: poisonous
    • ***


Webster's Revised Unabridged Dictionary
LL. deleterius, noxious, Gr. dhlhth`rios, fr. dhlei^sqai to hurt, damage; prob. akin to L. delere, to destroy
Chambers's Twentieth Century Dictionary
Gr. dēlētērios, hurtful—deleisthai, to hurt.


In literature:

There seems to be little doubt that the liver is highly deleterious.
"Heads and Tales" by Various
Money, at any rate, was not in itself deleterious.
"The Bertrams" by Anthony Trollope
Besides green-vitriol, it is possible that certain organic salts of iron, may be deleterious.
"Peat and its Uses as Fertilizer and Fuel" by Samuel William Johnson
He had "seen life," that is, everything deleterious to and destructive of it.
"The Crack of Doom" by Robert Cromie
Closely akin to fruits in their deleterious action on the digestive apparatus are sours in any form whatever.
"Health on the Farm" by H. F. Harris
The easier an act is, the more readily, if it is deleterious, will popular sentiment build a protective wall around it.
"The Sexual Life of the Child" by Albert Moll
He was perhaps anxious to shield her from the deleterious influences with which she was surrounded.
"Ferdinand De Soto, The Discoverer of the Mississippi" by John S. C. Abbott
But it is also true that some of the most deleterious books we have are romances.
"Graham's Magazine Vol XXXII. No. 5. May 1848" by Various
I believe that it is by a direct operation on the system, and not by the generation of miasmata, that heat proves so deleterious to the infant.
"North American Medical and Surgical Journal, Vol. 2, No. 3, July, 1826" by Various
In what a religion shares of the abstractly true it is beneficent; in what it partakes of the untrue it is deleterious.
"The Religious Sentiment" by Daniel G. Brinton
One of the most deleterious of fungi that we possess is at the same time one of the most beautiful.
"Fungi: Their Nature and Uses" by Mordecai Cubitt Cooke
The paints are deleterious, child.
"Shirley" by Charlotte Brontë
Obviously this is a slow and relatively expensive method, apart from the deleterious fumes arising from the quenching of the coke.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3" by Various
Ammonia has a deleterious action, but even this proceeds but slowly.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 4" by Various
The result can but be deleterious.
"The Atlantic Monthly, Volume 16, No. 95, September 1865" by Various
How many men follow this double, deleterious sort of life?
"From Sea to Sea" by Rudyard Kipling
A number of the species are edible, while others have been recorded as deleterious, poisonous, etc.
"Student's Hand-book of Mushrooms of America, Edible and Poisonous" by Thomas Taylor
Mr. Traffick's economy had a deleterious effect upon Gertrude, which she, poor girl, did not deserve.
"Ayala's Angel" by Anthony Trollope
The result can only be deleterious to them and to the State.
"Stand Up, Ye Dead" by Norman Maclean
These give it an osmotic pressure which prevents the deleterious effects of a strongly hypotonic liquid.
"The Mechanism of Life" by Stéphane Leduc

In news:

Additional Ways to Diminish the Deleterious Effects of Red Meat—Reply.
Additional Ways to Diminish the Deleterious Effects of Red Meat.
Gary Wilson is a physiology teacher and host of, a site that shows the deleterious effects heavy porn viewing has on your processor like OCD, ED, addiction, social anxiety, restlessness and desensitization to name a few.
However, they can and frequently do come in contact with the residual pathogenic organisms and hazardous or otherwise deleterious chemicals present in the wastewater applied as reclaim .
On top of not being able to sit comfortably you are placing a lot of deleterious forces on the lower back.
New Yorker writer Tad Friend on the deleterious effects of growing up WASP.
Breeders want to know if they can remove deleterious genes that predispose dogs to fatal diseases and still hold on to desirable traits that create the essence of a breed.
After getting a sex change in 2007, I married my sweetheart and immediately started looking around for evidence of our deleterious effect on society.

In science:

Of course, the neutral theory also assumes that many mutations are deleterious and are quickly removed by negative selection, and that a few mutations are clearly advantageous and positively selected, just as in the RNA landscape discussed above.
Biological Evolution and Statistical Physics
Non-stationary noise in low frequency part of the sensitivity range used for inspiral search, initially 50–2048 Hz, appeared to be dominant cause for deleterious glitches in the data.
Vetoes for Inspiral Triggers in LIGO Data
The move to higher frequencies has mainly been due to the deleterious effects of the interstellar medium.
On the Present and Future of Pulsar Astronomy
Let us take a simple model of only eight genes; the wild type or functional allele is denoted by 0, and the deleterious one by 1.
Review of haplotype complementarity under mutational pressure
Most of the mutations make an allele unfunctional and thus are deleterious; back mutations to the original “wild” state are rare and ignored here.
Review of haplotype complementarity under mutational pressure
Thus we deal only with deleterious inheritable mutations.
Review of haplotype complementarity under mutational pressure
For purification, in contrast, we have only A changing into B while keeping most alleles in the wild type, thus still keeping AB zygotes survivable because of the low number of deleterious alleles.
Review of haplotype complementarity under mutational pressure
If evolution is studied in small effective populations under relatively low recombination rates, the central parts of chromosomes start to form clusters of genes where recombinations have deleterious effect on reproduction potential.
Review of haplotype complementarity under mutational pressure
Their findings include that the presence of recombination leads to the emergence of modular regulatory control, a reduction in the deleterious effects of mutations, and greater phenotypic diversity.
The Emergence of Modularity in Biological Systems
Low rates of genetic change decrease deleterious mutations, but they also reduce the probability of beneficial mutations that may be necessary for adaptation.
The Emergence of Modularity in Biological Systems
SNPs, we sub-grouped models by the number of deleterious SNPs.
Assessment of Pooled Association Tests for Rare Genetic Variants within a Unified Framework
SNPs are more likely to be deleterious than protective.
Assessment of Pooled Association Tests for Rare Genetic Variants within a Unified Framework
SNPs may be either deleterious or beneficial.
Assessment of Pooled Association Tests for Rare Genetic Variants within a Unified Framework
This makes apparent that phonon renormalization has an important but deleterious effect on superconductivity, at least for the model considered in Ref. (14).
The polaron-like nature of an electron coupled to phonons
Only deleterious mutations are considered: if a bit 0 is randomly chosen in the parent’s genome, it is mutated to 1 in the offspring one.
The Penna model for biological ageing on a lattice: spatial consequences of child-care