antirejection

adjective

an·ti·re·jec·tion ˌan-tē-ri-ˈjek-shən

ˌan-ˌtī-

: used or tending to prevent organ or tissue transplant rejection

antirejection drugs

antirejection treatment

First Known Use

1964, in the meaning defined above

Time Traveler

The first known use of antirejection was in 1964

See more words from the same year

anti-regulatory

antirejection

anti-religion

See all Nearby Words

Style

“Antirejection.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antirejection. Accessed 5 Mar. 2026.

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antirejection

adjective

an·ti·re·jec·tion -ri-ˈjek-shən

: used or tending to prevent organ or tissue transplant rejection

antirejection drugs

Last Updated: 24 Feb 2026 - Definition revised