Word Finder - parasite

definition

A person who lives on other people's efforts or expense and gives little or nothing back.

definition

A sycophant or hanger-on.

definition

An organism that lives on or in another organism of a different species, deriving benefit from living on or in that other organism, while not contributing towards that other organism sufficiently to cover the cost to that other organism.

example

Lice, fleas, ticks and mites are widely spread parasites.

definition

A climbing plant which is supported by a wall, trellis etc.

definition

A retainer or companion of an ancient Celtic warrior, who praised him in song or poetry at gatherings; a bard.

The generic name of Trypanosoma was conferred by Gruby in 1843 upon the wellknown parasite of frogs.

The virus is usually a harmless parasite of human beings.

There it feeds first as an internal parasite of the waspgrub, then bores its way out, moults and devours the wasp larva from outside.

They describe the life cycle of the mosquito parasite plasmodium.

Both of these schizont stages release numerous merozoites, capable of infecting erythrocytes and generating the bloodstream forms of the parasite.

Use commercially frozen barbecue foods as the freezing process kills the toxoplasmosis parasite and always make sure food is cooked right through.

Caused by the trypanosome parasite Trypanosoma brucei rhodesiense, which is carried by the tsetse fly, the disease is fatal if not treated.

If the cycle be broken at any point the parasite must die out, assuming that it has no other origin or mode of existence.

The unexpected occurrence of these worms in pools and puddles, often in great numbers, has given rise to myths about showers of worms. They occasionally make their way into the human stomach with the drinking-water and are vomited; but this is a case of pseudo-parasitism - they are no true parasite of man.

The parasite has entered the central nervous system by crossing over the blood to brain barrier.

The head must be carefully searched for by the physician, as should it fail to be brought away the parasite continues to grow, and within a few months the segments again begin to appear.

It is believed that all of them may serve as hosts of the parasite.

There remains the question of protection against the parasite.

Perhaps the converse is more feasible in some circumstances - that is to say, preventing mosquitoes from having access to malarial persons, and so propagating the parasite in themsevles.

The parasitic hypothesis postulates the invasion of a parasite from without, thus making a new growth an infective process.

This depends largely on the station adopted by the parasite.

The knowledge of the presence of the parasite adversely affects nervous people and may lead to mental depression and hypochondria.

The production of pearls by oysters and mussels is common knowledge, but it is only recently that the origin of pearls has been traced and admitted to be due to inflammation set up by a parasite.

Not a few cases are known in which a parasitic larva is itself pierced by the ovipositor of a " hyperparasite," and even the offspring of the latter may itself fall a victim to the attack of a " tertiary parasite."

Probably this is not a haemal parasite, and lacks an alternate host.

The splenic type is somewhat smaller than Wright's parasite; the former, when pear-shaped, is from 31 to 4 p..

Siedlecki have published an important account (17) of this parasite, which they consider possesses a true trypaniform phase, and for which they have proposed the name Trypanosoma luis.

Gregory Nazianzen tells us that his father was a fuller, and that he himself soon became notorious as a parasite of so mean a type that he would "sell himself for a cake."

An epiphytic fungus is not necessarily a parasite, however, as many saprophytes (moulds, &c.) germinate and develop a loose mycelium on living leaves, but only enter and destroy the tissues after the leaf has fallen; in some cases, however, these saprophytic epiphytes can do harm by intercepting light and air from the leaf (Fumago, &c.), and such cases make it difficult to draw the line between saprophytism and parasitism.

Similar gradations are observed in the direct effect of the parasite on the host, which may be local (Hemileia) when the mycelium never extends far from the point of infection, or general (Phytophthora) when it runs throughout the plant.

A parasite may be restricted during a long incubation-period, however, and rampant and destructive later (Ustilago).

The latter fact, as well as the extraordinary fastidiousness, so to speak, of parasites in their choice of hosts or of organs for attack, point to reactions on the part of the host-plant, as well as capacities on that of the parasite, which may be partly explained in the light of what we 'now know regarding enzymes and chemotropism.

Some parasites attack many hosts and almost any tissue or organ (Botrytis cinerea), others are restricted to one family (Cystopus candidus) or genus (Phytophthora infestans) or even species (Pucciniastrum Padi), and it is customary to speak of rootparasites, leaf-parasites, &c., in expression of the fact that a given parasite occurs only on such organs - e.g.

The surface of the skin may be invaded by parasitic organisms and may exhibit spots, which are removed by something which will destroy the parasite, such as ointments containing mercurial salts.

The highest powers are required to see all parts of the parasite.

The parasite may be held in check by spraying with Bordeaux mixture early in the season.

In the parasitic Copepoda and Isopoda the disparity in size is carried to an extreme degree, and the minute male is attached, like a parasite, to the enormously larger female.

The word is thus transferred, in biology, to an animal or plant upon which a parasite lives.

The term parasite, from meaning a "hanger-on," has been transferred to any living creature which lives on another one.

When thousands after thousands are dragooned out of their country for the sake of their religion, or sent to row in the galleys for selling salt against law, - when the liberty of every individual is at the mercy of every prostitute, pimp or parasite that has access to power or any of its basest substitutes, - my mind, I own, is not at once prepared to be satisfied with gentle palliatives for such disorders" (Francis to Burke, November 3, 1790).

The most common human parasite is the Ascaris lumbricoides or round worm, found chiefly in children and occupying the upper portion of the intestine.

The threadworm or Oxyuris vermicularis is a common parasite infecting the rectum.

In this society, where there was no traffic in anything but wealth and ideas, the soldier was nothing more than an agitator or a parasite.

All vitality had been sapped from the old order of nobles, reduced in prestige by the savonnette a vilains (office purchased to ennoble the holder), enervated by court life, and so robbed of its roots in the soil, from which it had once drawn its strength, that it could no longer live save as a ruinous parasite on the central monarchy.

Now, since it seems this Manatus senegalensis ascends rivers, we may infer that its parasite travels with it.

To the extreme development of the carapace in Laura, as compared with the segmented body, it would be difficult to find among crustaceans any analogy more striking than that of the great ovarial expansions in Nicothoe astaci, the little copepod parasite of the common lobster.

The suckers are approximately the same in size, the ventral sucker being slightly anterior to the midline of the parasite.

In order to cause the disease, the single-celled parasite must multiply in the human bloodstream.

Malaria parasite antigens exposed on the surface of the infected red blood cell membrane.

Failure to detect cues from the immune system changes the parasite's development pattern.

Using LCMS techniques, we have already proven that chalcone release takes place in the parasite digestive vacuole.

Amebic dysentery is caused by the protozoan parasite Entamoeba histolytica.

Can anyone give me the name of the disease caused by a parasite from a dogs feces, or the name of the parasite?

This parasite must be considered one of the most pathogenic of the parasitic helminths.

In addition, a number of specimens of other important parasite helminths are also displayed on the center bench.