Definition of orphan drug in English:

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orphan drug

Pronunciation: /ˈôrfən ˌdrəɡ/

noun

A pharmaceutical that remains commercially undeveloped owing to limited potential for profitability.
Example sentences
  • These drugs are called orphan drugs and are allowed to have less premarketing testing.
  • One medical gas, nitric oxide, has been licensed as an orphan drug and increased in price.
  • In fact Glutathione is an orphan drug for the treatment of AIDS-associated cachexia.
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