adjective
Examples of poisonous in a Sentence
It is probably a poisonous plant, belonging, as it does, to a dangerous cohort.
In tropical waters a sea snake is found, which, though very poisonous, rarely bites.
Dulce gave her a poisonous stare.
Was it actually a grape, or some poisonous berry?
They first invented and named the alembic for the purposes of distillation, analyzed the substances of the three kingdoms of nature, tried the distinction and affinities of alkalis and acids, and converted the poisonous minerals into soft and salutary remedies.
In fact, it kills poisonous snakes.
Carmen glanced up at Alex, who was giving her a poisonous look.
She backed away from him, wiping her mouth as she threw him a poisonous look.
The better plan is to discard at once all fungi which have not been gathered from open pastures; by this act alone more than nine-tenths of worthless and poisonous species will be excluded.
A species of Acarus is recorded as infesting a store of powdered strychnine and feeding on that drug, so poisonous to larger organisms. Reference to literature (40).
Both these and many other plants such as gift-blaar and drouk-gras are poisonous to cattle.
You can tell the poisonous ones because they lift their heads out of the water while they swim.
This name is twice translated "adder," but as nothing is told of it beyond its poisonous character and the intractability of its disposition, it is impossible accurately to determine the species.
The dust emitted from mining the ore was poisonous in its raw state.
As regards reptiles, there are at least seven poisonous snakes - two cobras, two puff-adders and three vipers.
For insects provided with a biting mouth, which take nourishment from the whole leaf, shoot or fruit, the poisonous washes used are chiefly arsenical.
On the other hand it has been specially recorded of two of the species of spider-destroyers that they have great dislike and apparent fear of these little poisonous Hymenoptera.
The first named, which is poisonous in its native state, is the cassava of Spanish America.
Poison is not poisonous after all, nor are any wounds fatal.
The snake, however, to which the word "asp" has been most commonly applied is undoubtedly the haje of Egypt, the spy-slange or spitting snake of the Boers (Naja haje), one of the very poisonous Elarinae, from 3 to 4 ft.
Some plants are extremely poisonous, however.
Care and intelligence are especially needful with certain insecticides such as poisonous gases, or the operators may suffer.
Orifice of the grape-shaped (supposed poisonous) gland.
A poisonous but beautiful green snake is often mentioned by travellers.
These poisonous plants are found chiefly in the banken and low veld.
It is invariably the result of some cause acting generally, such as renal disease, valvular defect of the heart, or an impoverished state of the blood; while a mere oedema is usually dependent upon some local obstruction to the return of blood or lymph, or of both, the presence of parasites within the tissue, such as the filaria sanguinis hominis or trichina spiralis, or the poisonous bites of insects.
There is no actual proof that this spider is more poisonous than others, but it is a significant fact that its species, inhabiting countries as widely separated as Chile, Madagascar, Australia, New Zealand and South Europe are held in great fear by the indigenous population, and many stories are current of serious or fatal results following their bites.
Amongst these may be mentioned the neutralizing of the toxins in cases of diphtheria, tetanus and poisonous snake-bite; " serum therapeutics "; and treatment by " vaccines."
Thus the digestive function, in its largest sense, is now seen to consist, not only in preparation and supply, but in no small measure also of protective and antidotal conversions of the matters submitted to it; coincidently with agents of digestion proper are found in the circuit of normal digestion "anti-substances" which neutralize or convert peptones in their poisonous phases; an autochthonous ferment, such as rennet for instance, calling forth an anti-rennet, and so on.
As some compensation for its paucity of useful animals and food plants, New Zealand was, of course, free from wild carnivora, has no snakes, and only one poisonous insect, the katipo, a timid little spider found on certain sea-beaches.
The free acid, which is obtained by treating the salts with acids, is an oily liquid smelling like prussic acid; it is very explosive, and the vapour is poisonous to about the same degree as that of prussic acid.
The now well-known fact that small doses of poisonous substances may act as stimuli to living protoplasm, and that respiratory activity and growth may be accelerated by chloroform, ether and even powerful mineral poisons, such as mercuric chloride, in minimal doses, offers some explanation of these phenomena of hypertrophy, wound fever, and other responses to the presence of irritating agents.
Nature has provided several species of animals, birds and reptiles, to feed upon these insects, and various poisonous and suffocating compounds are used to destroy them, but with no great degree of success.
So various are the conditions of selfregulation in various animals, both in respect of their peculiar and several modes of assimilating different foods, and of protecting themselves against particular dangers from without, that, as we might have expected, the bloods taken from different species, or even perhaps from different individuals, are found to be so divergent that the healthy serum of one species may be, and often is, poisonous to another; not so much in respect of adventitious substances, as because the phases of physiological change in different species do not harmonize; each by its peculiar needs has been modified until, in their several conditions of life, they vary so much about the mean as to have become almost if not quite alien one to another.
The berries have a tiny pentagram on them and are especially poisonous.
A short walk brings us to Red frog Beach to see the tiny poisonous red frogs.
Watch out for dangerous sea creatures like sharks and poisonous jellyfish - some are deadly.
The Portuguese man-of-war is a large poisonous jellyfish-like creature found in the UK.
Carbon monoxide detectors detect carbon monoxide, a poisonous gas with no smell, taste or color.
According to one belief, Romans were thought to have mixed a special drink for their enemy with a poisonous nightshade in it.
State that nitrogen and oxygen from the air react inside a car engine to form nitrogen oxides (these are poisonous gasses ).
The long silence was full of formless historical memories of murdered husbands and poisonous paramours.
For the next 400 years or so, tomatoes were considered poisonous.
The atmosphere on the front line became ever more poisonous.
Case studies - alcohol research For centuries, alcohol has been regarded as poisonous for the liver.
This new directive is an important step toward getting potentially poisonous substances out of the waste stream.
The tank would be filled with ' Paris Green ', an extremely poisonous insecticide.
Some flowers, just like other plants, can be very poisonous.
Yet if praise be given as an alms, we could not drop so poisonous a one into any man's hat.
During our trip we only saw one snake, a not poisonous Carpet Python.