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

Fluzone High-Dose quadrivalent: This vaccine has been available in the United States since 2010 and contains four times the amount of flu antigen — or the molecule that provokes the immune system to create antibodies against the flu — as the standard flu shot.

From Washington Post