antineoplastic

adjective

an·​ti·​neo·​plas·​tic ˌan-tē-ˌnē-ə-ˈpla-stik How to pronounce antineoplastic (audio) ˌan-ˌtī- How to pronounce antineoplastic (audio)
: inhibiting or preventing the growth and spread of tumors or malignant cells

Examples of antineoplastic in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Other bioactive compounds have antioxidant, antineoplastic, anti-inflammatory, antibacterial, antiviral, antimicrobial, hepatoprotective, and laxative properties. Encyclopedia Britannica, 1 May 2026

Word History

First Known Use

1898, in the meaning defined above

Time Traveler
The first known use of antineoplastic was in 1898

Browse Nearby Words

Cite this Entry

“Antineoplastic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antineoplastic. Accessed 3 May. 2026.

Medical Definition

antineoplastic

1 of 2 adjective
an·​ti·​neo·​plas·​tic -ˌnē-ə-ˈplas-tik How to pronounce antineoplastic (audio)
: inhibiting or preventing the growth and spread of neoplasms or malignant cells
treated with a regimen of antineoplastic drugs

antineoplastic

2 of 2 noun
: an antineoplastic agent
Love words? Need even more definitions?

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

More from Merriam-Webster