quadrivalent

American  

[kwod-ruh-vey-luhnt, kwo-driv-uh-] / ˌkwɒd rəˈveɪ lənt, kwɒˈdrɪv ə- /

adjective

Chemistry.

1. having a valence of four; tetravalent.

2. exhibiting four different valences, as antimony with valences of 5, 4, 3, and −3.

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quadrivalent British  

/ ˌkwɒdrɪˈveɪlənt /

adjective

1. chem another word for tetravalent

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Other Word Forms

• quadrivalence noun
• quadrivalency noun
• quadrivalently adverb

Etymology

Origin of quadrivalent

First recorded in 1860–65; quadri- + -valent

Example Sentences

U.S. flu vaccines are likely to move from quadrivalent to trivalent due to a change in circulating influenza viruses, says a University of Michigan researcher.

From Science Daily

Currently, all influenza vaccines in the United States are quadrivalent, meaning that they protect against four different flu viruses.

From Science Daily

When it comes to the flu vaccine, there are three types that are recommended for older people, all with long, complicated names: HD-IIV4, or quadrivalent high-dose inactivated influenza vaccine; RIV4, or quadrivalent recombinant influenza vaccine; and aIIV4, or quadrivalent adjuvanted inactivated influenza vaccine.

From Los Angeles Times

Vaccines with “quadrivalent” in their names provide protection against four different strains of influenza.

From Washington Post

Fluad quadrivalent: This vaccine contains the same amount of flu antigen as the standard shot but also contains something called an adjuvant.

From Washington Post