quad·ri·va·lent
ˌkwä-drə-ˈvā-lənt 
in sense 2
kwä-ˈdri-və-lənt
1
2
: composed of four homologous chromosomes synapsed in meiotic prophase
: a quadrivalent chromosomal group
Examples of quadrivalent in a Sentence
Recent Examples on the Web
Mary Kekatos, ABC News, 22 Nov. 2023
After years of work, the first quadrivalent shots began to roll out in 2012.
—Helen Branswell, STAT, 5 Oct. 2023
Alexander Tin, CBS News, 29 Feb. 2024
Then the quadrivalent Gardasil was administered until 2023, when the nonavalent Gardasil 9 was introduced.
—Annalisa Merelli, STAT, 25 Jan. 2024
See All Example Sentences for quadrivalent
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Adjective
For the majority of those aged 6 months and older, the CDC recommends receiving the standard quadrivalent flu vaccine, which protects against four different strains of the virus.
—Mary Kekatos, ABC News, 22 Nov. 2023
After years of work, the first quadrivalent shots began to roll out in 2012.
—Helen Branswell, STAT, 5 Oct. 2023
Noun
That could effectively open up one of the seats in the vaccines, dropping them next season from quadrivalent formulations – targeting four different antigens in a single shot – to trivalent.
—Alexander Tin, CBS News, 29 Feb. 2024
Then the quadrivalent Gardasil was administered until 2023, when the nonavalent Gardasil 9 was introduced.
—Annalisa Merelli, STAT, 25 Jan. 2024
See All Example Sentences for quadrivalent
Cite this Entry
“Quadrivalent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quadrivalent. Accessed 10 Sep. 2025.
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