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parasite vs. parasitoid

[ par-uh-sahyt ]
noun
  1. an organism that lives on or in an organism of another species, known as the host, from the body of which it obtains nutriment.
  2. a person who receives support, advantage, or the like, from another or others without giving any useful or proper return, as one who lives on the hospitality of others: They are greedy politicians, parasites with their snouts in the public trough.
  3. (in ancient Greece) a person who received free meals in return for amusing or impudent conversation, flattering remarks, etc.
[ par-uh-si-toid, -sahy- ]

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