UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈrɛtrəʊˌvɪə/US:USA pronunciation: respellingUSA pronunciation: respelling(retrō vēr′)

WordReference Random House Unabridged Dictionary of American English © 2020
Ret•ro•vir  (retrō vēr′),USA pronunciation [Pharm., Trademark.]
  1. Drugs, Trademarksthe international brand name for azidothymidine. Cf.  AZT, zidovudine. 

Collins Concise English Dictionary © HarperCollins Publishers::
Retrovir /ˈrɛtrəʊˌvɪə/ n
  1. trademark a brand of the drug zidovudine

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