acellular

adjective
acel·​lu·​lar | \ (ˌ)ā-ˈsel-yə-lər How to pronounce acellular (audio) \

Definition of acellular

1 : containing no cells acellular vaccines
2 : not divided into cells : consisting of a single complex cell used especially of protozoa and ciliates

Examples of acellular in a Sentence

Recent Examples on the Web For the diphtheria and tetanus toxoids and acellular pertussis vaccine or DTaP, coverage ranged from 88.8% in Idaho to at least 99.2% in Mississippi, according to the report. Jacqueline Howard, CNN, "Vaccine exemption rates among US kindergartners continue to climb, CDC says," 17 Oct. 2019 First, for unclear reasons, protection conferred by the acellular vaccine waned over time. Quanta Magazine, "Vaccines Are Pushing Pathogens to Evolve," 10 May 2018 The pertussis formulation, known as whole-cell, was replaced in the 1990s with acellular versions contained in the current DTaP and Tdap vaccines. New York Times, "Vaccine Injury Claims Are Few and Far Between," 18 June 2019 There is also another, less publicized, method of producing animal products called acellular agriculture. Andrew Amelinckx, Smithsonian, "What a Vice President of the Humane Society Has To Say About Lab-Grown Meat," 12 Dec. 2017 The new state rules also require some additional vaccinations for polio and meningitis, in addition to those already required for tetanus, diphtheria, acellular pertussis, measles, mumps, rubella, hepatitis B and children pox. Rita Giordano, Philly.com, "Pa. families appear to embrace tougher school vaccination rules," 13 Sep. 2017 The four vaccines for entering kindergarten remain the same: 1) chicken pox, 2) polio, 3) measles/mumps/rubella (MMR) and 4) diphtheria, tetanus and acellular pertussis (DTaP) for children under seven years. Cincinnati.com, "Important vaccination recommendations and updates for teens, preteens," 14 Aug. 2017 Pennsylvania also requires vaccination against tetanus, diphtheria, acellular pertussis, measles, mumps, rubella, hepatitis B, and chickenpox. Rita Giordano, Philly.com, "New Pa. health rule: Get your kids vaccinated or they can't go to school," 8 Aug. 2017

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

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First Known Use of acellular

1857, in the meaning defined at sense 1

History and Etymology for acellular

a- entry 2 + cellular entry 1

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Time Traveler for acellular

Time Traveler

The first known use of acellular was in 1857

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Cite this Entry

“Acellular.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acellular. Accessed 27 Nov. 2020.

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More Definitions for acellular

acellular

adjective
acel·​lu·​lar | \ (ˈ)ā-ˈsel-yə-lər How to pronounce acellular (audio) \

Medical Definition of acellular

1 : containing no cells acellular vaccines
2 : not divided into cells : consisting of a single complex cell used especially of protozoans and ciliates

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