Definition of orphan drug in English:

orphan drug

Syllabification: or·phan drug

noun

  • A pharmaceutical that remains commercially undeveloped owing to limited potential for profitability.
    More 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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