quadrivalent

adjective
quad·​ri·​va·​lent | \ˌkwä-drə-ˈvā-lənt, in sense 2 kwä-ˈdri-və-lənt \

Definition of quadrivalent 

(Entry 1 of 2)

2 : composed of four homologous chromosomes synapsed in meiotic prophase

quadrivalent

noun

Definition of quadrivalent (Entry 2 of 2)

: a quadrivalent chromosomal group

Examples of quadrivalent in a Sentence

Recent Examples on the Web: Adjective

Both the trivalent and quadrivalent vaccines given this year protect against the B strain that seems to be popping up most often, but there could still be other strains out there. Kate Morgan, The Cut, "What to Know About Influenza B, the ‘Second Wave’ of Flu Season," 4 Apr. 2018 Both lab and rapid-flu tests show more than 70 percent of patients are testing positive for Influenza B, which historically is less serious than Influenza A and the B strain is covered by this year's quadrivalent flu shot. Bill Hanna, star-telegram, "Finally, this deadly flu season is showing signs of improving in North Texas | Fort Worth Star-Telegram," 2 Mar. 2018 Typically, trivalent formulations include two A strains and one B strain, and quadrivalent formulations add a second B strain. Susan Scutti, CNN, "CDC panel again advises against FluMist," 21 June 2017

Recent Examples on the Web: Noun

The quadrivalent version protects against four strains of flu. Anne Saker, Cincinnati.com, "We’re almost done with a brutal flu season. Get ready now for next year.," 2 Apr. 2018 Protection against one of the strains circulating in Alabama, Type B/Yamagata, is available only in the quadrivalent vaccine, according to ADPH. Mike Cason, AL.com, "Alabama Public Health Department says flu cases rising," 29 Dec. 2017 Flu vaccines generally come as trivalent or quadrivalent formulas. Beth Mole, Ars Technica, "Looks like a rough flu season ahead. Here are answers to ALL your flu questions," 9 Dec. 2017 For northern climes, the WHO proposes a cocktail of H1N1, H3N2 and a B virus—and for those interested in a quadrivalent vaccine, a dash of B/Phuket/3073/2013-like virus. Brian W. Simpson, Smithsonian, "What’s In Your Flu Shot?," 24 Oct. 2017 Vaccines include high dose for adults over 65 years and quadrivalent for ages five years and older. Courant Community, "Community News For The Valley Edition," 18 Sep. 2017 Vaccines include high dose for adults over 65 years and quadrivalent for ages five years and older. Courant Community, "Community News For The Valley Edition," 29 Aug. 2017 At last year's meeting, MedImmune's Dr. Chris Ambrose shared results from the company's 2015-16 effectiveness study, which found the FluMist quadrivalent vaccine to be 46% effective, compared with the flu shot's 65% effectiveness. Susan Scutti, CNN, "CDC panel again advises against FluMist," 21 June 2017

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

See More

First Known Use of quadrivalent

Adjective

1865, in the meaning defined at sense 1

Noun

1923, in the meaning defined above

History and Etymology for quadrivalent

Adjective

International Scientific Vocabulary

Keep scrolling for more

Learn More about quadrivalent

Share quadrivalent

Statistics for quadrivalent

Look-up Popularity

Time Traveler for quadrivalent

The first known use of quadrivalent was in 1865

See more words from the same year

Keep scrolling for more

More Definitions for quadrivalent

quadrivalent

adjective
quad·​ri·​va·​lent | \ˌkwäd-rə-ˈvā-lənt, in sense 2 kwä-ˈdriv-ə-lənt\

Medical Definition of quadrivalent 

(Entry 1 of 2)

2 : composed of four homologous chromosomes synapsed in meiotic prophase

quadrivalent

noun

Medical Definition of quadrivalent (Entry 2 of 2)

: a quadrivalent chromosomal group

Comments on quadrivalent

What made you want to look up quadrivalent? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to move with a clumsy heavy tread

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!