pentavalent

adjective

pen·​ta·​va·​lent ˌpen-tə-ˈvā-lənt How to pronounce pentavalent (audio)
: having a valence of five

Examples of pentavalent 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.
Today, Rina will receive her routine pentavalent vaccination, which protects against five diseases, including tetanus. Forbes.com, 1 May 2026 Indeed, about 14% of Gavi's portfolio consists of vaccines that contain thimerosal in multi-dose vials, including the 5 in 1 pentavalent vaccine, the DTP vaccine that protects against diphtheria, tetanus and pertussis and the hepatitis B vaccine. Gabrielle Emanuel, NPR, 30 Jan. 2026 Our foundation and other partners worked with two vaccine companies in India -- Biological E Limited and Serum Institute of India -- to develop a pentavalent vaccine that would be affordable everywhere. Bill Gates, CNN, 13 Oct. 2021

Word History

First Known Use

1866, in the meaning defined above

Time Traveler
The first known use of pentavalent was in 1866

Browse Nearby Words

Cite this Entry

“Pentavalent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pentavalent. Accessed 7 Jul. 2026.

Medical Definition

pentavalent

adjective
pen·​ta·​va·​lent ˌpent-ə-ˈvā-lənt How to pronounce pentavalent (audio)
: having a valence of five
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