Definition of parasite in English:

parasite

noun ˈparəsʌɪtˈpɛrəˌsaɪt

1An organism that lives in or on an organism of another species (its host) and benefits by deriving nutrients at the other's expense.
寄生生物；寄生植物
Parasites exist in huge variety and include animals, plants, and microorganisms. They may live as ectoparasites on the surface of the host (e.g. arthropods such as ticks, mites, lice, fleas, and many insects infesting plants) or as endoparasites in the gut or tissues (e.g. many kinds of worm), and cause varying degrees of damage or disease to the host
the parasite attaches itself to the mouths of fishes
an intestinal parasite of cattle
Example sentencesExamples
- Because host nestlings remain in the nest, the parasite must compete with host nestlings for food.
- By contrast, infection will tend to limit nitrate accumulation in the host roots as a result of nitrate transfer from host roots to the parasite.
- After all, more than half the species on Earth are parasites, and most organisms are host to a number of them.
- Another hallmark of parasites is that hosts often evolve defenses against them.
- Good places for reliable encounters are where small fish act as barbers to their hosts, cleaning away parasites from their skin.
- Detrimental effects on hosts can occur at several stages of the parasite's life cycle.
- The relationship between host and parasite is not a simple one, and just as the parasite affects the host, so the host affects the parasite.
- Only the latter could be accepted as evidence of coevolution between the parasite and a particular host.
- We consider three rejection scenarios by a host of a nonevicting parasite.
- Other typically much larger organisms, including parasites such as lice, worms and scabies can also spread from person to person.
- Host radiation allows a parasite to expand its ecological niche by adapting to one or more novel hosts.
- All parental hosts of heterospecific brood parasites must pay the cost of rearing non-kin.
- There are many species of parasites and disease organisms that infect dogs.
- These genes are essentially immune system genes and defend the host organism from parasites.
- An implicit requirement is that parasites and their hosts match up to some degree.
- The most sophisticated defense system used by hosts against parasites is the immune system.
- Some water molds are parasites on other organisms; they may grow on the scales or eggs of fish, or on amphibians.
- If hosts and parasites are coevolving, this can drive the rapid divergence of amino acid sequences.
- Another constraint on ejection is the close resemblance of eggs of hosts and parasites.
- Selection has been intense as the parasites are host specific and the drugs are very widely used.
2derogatory A person who habitually relies on or exploits others and gives nothing in return.
〈贬〉过着寄生生活的人，寄生虫
the capitalist is really a parasite on the workers
Example sentencesExamples
- They are all a pack of bludgers and parasites who pay no taxes but spend ours.
- All workers were oppressed, all middle class people parasites.
- I've repented my sins to Sepp and he has led me away from the bloodsuckers and parasites that threatened to dissolve my soul.
- It was in essence a parasite leeching on to Western decadence and lack of will.
- They are literary parasites, the enemies of creativity and imagination.
- And that's what it will come to, for the council workers and other public sector parasites.
- MPs, councillors and all their cronies are nothing more than scroungers, spongers, parasites.
- Every governmental attempt to ameliorate poverty seems to attract its own breed of parasite and leech.
- In the unionists' imagination, the rich are social parasites living lives of leisure on inherited wealth.
- These neocon pseudofascists are like a parasite using the host Republican party to attain their ends.
- They were like parasites, leeching on to him, just wanting him to do this or that, or to torture him.
Synonyms
hanger-on, cadger, leech, passenger, drone
informal bloodsucker, sponger, sponge, scrounger, freeloader
British informal ligger
North American informal moocher, mooch
Australian/New Zealand informal bludger

Origin

Mid 16th century: via Latin from Greek parasitos '(person) eating at another's table', from para- 'alongside' + sitos 'food'.

The word parasite came via Latin from Greek parasitos ‘(person) eating at another's table’, from para- ‘alongside’ and sitos ‘food’, and originally came into the language as a term for a hanger-on or sponger. Its use as a term in biology dates from the early 18th century.

Definition of parasite in US English:

parasite

nounˈpɛrəˌsaɪtˈperəˌsīt

1An organism that lives in or on an organism of another species (its host) and benefits by deriving nutrients at the other's expense.
寄生生物；寄生植物
Parasites exist in huge variety, including animals, plants, and microorganisms. They may live as ectoparasites on the surface of the host (e.g., arthropods such as ticks, mites, lice, fleas, and many insects infesting plants) or as endoparasites in the gut or tissues (e.g., many kinds of worm), and cause varying degrees of damage or disease to the host
the parasite attaches itself to the mouths of fishes
an intestinal parasite of cattle
Example sentencesExamples
- There are many species of parasites and disease organisms that infect dogs.
- Only the latter could be accepted as evidence of coevolution between the parasite and a particular host.
- These genes are essentially immune system genes and defend the host organism from parasites.
- Because host nestlings remain in the nest, the parasite must compete with host nestlings for food.
- Other typically much larger organisms, including parasites such as lice, worms and scabies can also spread from person to person.
- After all, more than half the species on Earth are parasites, and most organisms are host to a number of them.
- By contrast, infection will tend to limit nitrate accumulation in the host roots as a result of nitrate transfer from host roots to the parasite.
- Host radiation allows a parasite to expand its ecological niche by adapting to one or more novel hosts.
- All parental hosts of heterospecific brood parasites must pay the cost of rearing non-kin.
- The relationship between host and parasite is not a simple one, and just as the parasite affects the host, so the host affects the parasite.
- Good places for reliable encounters are where small fish act as barbers to their hosts, cleaning away parasites from their skin.
- We consider three rejection scenarios by a host of a nonevicting parasite.
- The most sophisticated defense system used by hosts against parasites is the immune system.
- Detrimental effects on hosts can occur at several stages of the parasite's life cycle.
- An implicit requirement is that parasites and their hosts match up to some degree.
- Another hallmark of parasites is that hosts often evolve defenses against them.
- Another constraint on ejection is the close resemblance of eggs of hosts and parasites.
- Selection has been intense as the parasites are host specific and the drugs are very widely used.
- If hosts and parasites are coevolving, this can drive the rapid divergence of amino acid sequences.
- Some water molds are parasites on other organisms; they may grow on the scales or eggs of fish, or on amphibians.
2derogatory A person who habitually relies on or exploits others and gives nothing in return.
〈贬〉过着寄生生活的人，寄生虫
the capitalist is really a parasite on the workers
Example sentencesExamples
- They are all a pack of bludgers and parasites who pay no taxes but spend ours.
- Every governmental attempt to ameliorate poverty seems to attract its own breed of parasite and leech.
- They were like parasites, leeching on to him, just wanting him to do this or that, or to torture him.
- I've repented my sins to Sepp and he has led me away from the bloodsuckers and parasites that threatened to dissolve my soul.
- They are literary parasites, the enemies of creativity and imagination.
- MPs, councillors and all their cronies are nothing more than scroungers, spongers, parasites.
- It was in essence a parasite leeching on to Western decadence and lack of will.
- These neocon pseudofascists are like a parasite using the host Republican party to attain their ends.
- In the unionists' imagination, the rich are social parasites living lives of leisure on inherited wealth.
- And that's what it will come to, for the council workers and other public sector parasites.
- All workers were oppressed, all middle class people parasites.
Synonyms
hanger-on, cadger, leech, passenger, drone

Origin

Mid 16th century: via Latin from Greek parasitos ‘(person) eating at another's table’, from para- ‘alongside’ + sitos ‘food’.

词汇	parasite
释义	Definition of parasite in English: parasite noun ˈparəsʌɪtˈpɛrəˌsaɪt 1An organism that lives in or on an organism of another species (its host) and benefits by deriving nutrients at the other's expense. 寄生生物；寄生植物 Parasites exist in huge variety and include animals, plants, and microorganisms. They may live as ectoparasites on the surface of the host (e.g. arthropods such as ticks, mites, lice, fleas, and many insects infesting plants) or as endoparasites in the gut or tissues (e.g. many kinds of worm), and cause varying degrees of damage or disease to the host the parasite attaches itself to the mouths of fishes an intestinal parasite of cattle Example sentencesExamples Because host nestlings remain in the nest, the parasite must compete with host nestlings for food. By contrast, infection will tend to limit nitrate accumulation in the host roots as a result of nitrate transfer from host roots to the parasite. After all, more than half the species on Earth are parasites, and most organisms are host to a number of them. Another hallmark of parasites is that hosts often evolve defenses against them. Good places for reliable encounters are where small fish act as barbers to their hosts, cleaning away parasites from their skin. Detrimental effects on hosts can occur at several stages of the parasite's life cycle. The relationship between host and parasite is not a simple one, and just as the parasite affects the host, so the host affects the parasite. Only the latter could be accepted as evidence of coevolution between the parasite and a particular host. We consider three rejection scenarios by a host of a nonevicting parasite. Other typically much larger organisms, including parasites such as lice, worms and scabies can also spread from person to person. Host radiation allows a parasite to expand its ecological niche by adapting to one or more novel hosts. All parental hosts of heterospecific brood parasites must pay the cost of rearing non-kin. There are many species of parasites and disease organisms that infect dogs. These genes are essentially immune system genes and defend the host organism from parasites. An implicit requirement is that parasites and their hosts match up to some degree. The most sophisticated defense system used by hosts against parasites is the immune system. Some water molds are parasites on other organisms; they may grow on the scales or eggs of fish, or on amphibians. If hosts and parasites are coevolving, this can drive the rapid divergence of amino acid sequences. Another constraint on ejection is the close resemblance of eggs of hosts and parasites. Selection has been intense as the parasites are host specific and the drugs are very widely used. 2derogatory A person who habitually relies on or exploits others and gives nothing in return. 〈贬〉过着寄生生活的人，寄生虫 the capitalist is really a parasite on the workers Example sentencesExamples They are all a pack of bludgers and parasites who pay no taxes but spend ours. All workers were oppressed, all middle class people parasites. I've repented my sins to Sepp and he has led me away from the bloodsuckers and parasites that threatened to dissolve my soul. It was in essence a parasite leeching on to Western decadence and lack of will. They are literary parasites, the enemies of creativity and imagination. And that's what it will come to, for the council workers and other public sector parasites. MPs, councillors and all their cronies are nothing more than scroungers, spongers, parasites. Every governmental attempt to ameliorate poverty seems to attract its own breed of parasite and leech. In the unionists' imagination, the rich are social parasites living lives of leisure on inherited wealth. These neocon pseudofascists are like a parasite using the host Republican party to attain their ends. They were like parasites, leeching on to him, just wanting him to do this or that, or to torture him. Synonyms hanger-on, cadger, leech, passenger, drone informal bloodsucker, sponger, sponge, scrounger, freeloader British informal ligger North American informal moocher, mooch Australian/New Zealand informal bludger Origin Mid 16th century: via Latin from Greek parasitos '(person) eating at another's table', from para- 'alongside' + sitos 'food'. The word parasite came via Latin from Greek parasitos ‘(person) eating at another's table’, from para- ‘alongside’ and sitos ‘food’, and originally came into the language as a term for a hanger-on or sponger. Its use as a term in biology dates from the early 18th century. Definition of parasite in US English: parasite nounˈpɛrəˌsaɪtˈperəˌsīt 1An organism that lives in or on an organism of another species (its host) and benefits by deriving nutrients at the other's expense. 寄生生物；寄生植物 Parasites exist in huge variety, including animals, plants, and microorganisms. They may live as ectoparasites on the surface of the host (e.g., arthropods such as ticks, mites, lice, fleas, and many insects infesting plants) or as endoparasites in the gut or tissues (e.g., many kinds of worm), and cause varying degrees of damage or disease to the host the parasite attaches itself to the mouths of fishes an intestinal parasite of cattle Example sentencesExamples There are many species of parasites and disease organisms that infect dogs. Only the latter could be accepted as evidence of coevolution between the parasite and a particular host. These genes are essentially immune system genes and defend the host organism from parasites. Because host nestlings remain in the nest, the parasite must compete with host nestlings for food. Other typically much larger organisms, including parasites such as lice, worms and scabies can also spread from person to person. After all, more than half the species on Earth are parasites, and most organisms are host to a number of them. By contrast, infection will tend to limit nitrate accumulation in the host roots as a result of nitrate transfer from host roots to the parasite. Host radiation allows a parasite to expand its ecological niche by adapting to one or more novel hosts. All parental hosts of heterospecific brood parasites must pay the cost of rearing non-kin. The relationship between host and parasite is not a simple one, and just as the parasite affects the host, so the host affects the parasite. Good places for reliable encounters are where small fish act as barbers to their hosts, cleaning away parasites from their skin. We consider three rejection scenarios by a host of a nonevicting parasite. The most sophisticated defense system used by hosts against parasites is the immune system. Detrimental effects on hosts can occur at several stages of the parasite's life cycle. An implicit requirement is that parasites and their hosts match up to some degree. Another hallmark of parasites is that hosts often evolve defenses against them. Another constraint on ejection is the close resemblance of eggs of hosts and parasites. Selection has been intense as the parasites are host specific and the drugs are very widely used. If hosts and parasites are coevolving, this can drive the rapid divergence of amino acid sequences. Some water molds are parasites on other organisms; they may grow on the scales or eggs of fish, or on amphibians. 2derogatory A person who habitually relies on or exploits others and gives nothing in return. 〈贬〉过着寄生生活的人，寄生虫 the capitalist is really a parasite on the workers Example sentencesExamples They are all a pack of bludgers and parasites who pay no taxes but spend ours. Every governmental attempt to ameliorate poverty seems to attract its own breed of parasite and leech. They were like parasites, leeching on to him, just wanting him to do this or that, or to torture him. I've repented my sins to Sepp and he has led me away from the bloodsuckers and parasites that threatened to dissolve my soul. They are literary parasites, the enemies of creativity and imagination. MPs, councillors and all their cronies are nothing more than scroungers, spongers, parasites. It was in essence a parasite leeching on to Western decadence and lack of will. These neocon pseudofascists are like a parasite using the host Republican party to attain their ends. In the unionists' imagination, the rich are social parasites living lives of leisure on inherited wealth. And that's what it will come to, for the council workers and other public sector parasites. All workers were oppressed, all middle class people parasites. Synonyms hanger-on, cadger, leech, passenger, drone Origin Mid 16th century: via Latin from Greek parasitos ‘(person) eating at another's table’, from para- ‘alongside’ + sitos ‘food’.
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