mono·​va·​lent | \ ˌmä-nə-ˈvā-lənt How to pronounce monovalent (audio) \

Definition of monovalent

1 : having a valence of one
2 : having specific immunologic activity against a single antigen, microorganism, or disease a monovalent vaccine

Examples of monovalent in a Sentence

Recent Examples on the Web The plan was to snuff out the few type 2 outbreaks that would inevitably emerge from the last use of trivalent vaccine with a limited, emergency stockpile of a vaccine effective against just type 2, known as monovalent OPV2 (mOPV2). Leslie Roberts, Science | AAAS, "The polio eradication campaign is faltering. Can a new vaccine help it get back on track?," 10 Nov. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'monovalent.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of monovalent

1871, in the meaning defined at sense 1

History and Etymology for monovalent

International Scientific Vocabulary

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Time Traveler for monovalent

Time Traveler

The first known use of monovalent was in 1871

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Statistics for monovalent

Last Updated

16 Nov 2020

Cite this Entry

“Monovalent.” Dictionary, Merriam-Webster, Accessed 1 Dec. 2020.

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mono·​va·​lent | \ ˌmän-ə-ˈvā-lənt How to pronounce monovalent (audio) \

Medical Definition of monovalent

1 : having a chemical valence of one
2 : containing antibodies specific for or antigens of a single strain of a microorganism a monovalent vaccine

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