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pentavalent

American  
[pen-tuh-vey-luhnt, pen-tav-uh-] / ˌpɛn təˈveɪ lənt, pɛnˈtæv ə- /

adjective

Chemistry.
  1. having a valence of 5.

    pentavalent arsenic.

  2. quinquevalent.


pentavalent British  
/ ˌpɛntəˈveɪlənt /

adjective

  1. Also: quinquevalentchem having a valency of five

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of pentavalent

First recorded in 1870–75; penta- + -valent

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The WHO said that only 57% of Nigerians are immunised with the pentavalent vaccine, which protects against five life-threatening diseases, including diphtheria.

From BBC Oct. 12, 2023

MenAfriVac is given to 1- to 29-year-olds, who are most vulnerable to bacterial meningitis; one possibility is to lower the upper age limit for the pentavalent vaccine.

From Science Magazine Oct. 7, 2021

Jacob Puliyel, head of pediatrics at St Stephen's Hospital in Delhi, has been a vocal opponent of both the HPV vaccines and the pentavalent vaccine.

From Scientific American Jun. 22, 2011

Take the pentavalent vaccine, which combines immunisation against five diseases, such as whooping cough and diphtheria, into one.

From Economist Jun. 16, 2011

Group V.: N, trivalent and pentavalent, but divalent in nitric oxide; P, As, Sb, Bi, trivalent and pentavalent, the last being possibly divalent in BiO and BiCl2.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" by Various

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