investigational new drug

noun

in·​ves·​ti·​ga·​tion·​al new drug in-ˌves-ti-ˈgā-shə-nəl- How to pronounce investigational new drug (audio)
: a drug that has not been approved for general use by the Food and Drug Administration but is under investigation in clinical trials regarding its safety and effectiveness first by clinical investigators and then by practicing physicians using patients who have given informed consent to participate
abbreviation IND

called also investigational drug

Browse Nearby Entries

See all Nearby Words

Cite this Entry

“Investigational new drug.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/investigational%20new%20drug. Accessed 27 Feb. 2025.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!