infective

adjective
in·​fec·​tive | \ in-ˈfek-tiv How to pronounce infective (audio) \

Definition of infective

a : producing or capable of producing or transmitting infection infective oocysts are ingested with contaminated feed or water.— Douglas N. Stern Affected cats not yet showing signs of illness may shed the virus and be infective to other cats …Cat Fancy
b : caused by or resulting from an infection with one or more pathogenic agents infective bacterial endocarditis
c : affecting others : spreading easily to others Different teachers will demonstrate different skills and strengths. Some will have … an infective enthusiasm for their own subject.— Jonathan Glazzard et al.

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Other Words from infective

infectivity \ (ˌ)in-​ˌfek-​ˈti-​və-​tē How to pronounce infectivity (audio) \ noun

Examples of infective in a Sentence

Recent Examples on the Web As the membranes fuse, the virus releases its genes into the cell, which produces billions of copies of the virus; these viral particles in turn break out of the cell and spread to other cells, where the infective process repeats. Scientific American, "20 Years in the Making: A New Approach to a Vaccine against HIV," 12 May 2020 In the early 1900s, doctors tested anti-infective medications by giving every other patient an experimental therapy. Robert Langreth, Bloomberg.com, "A Fast-Moving Virus Pits Treating Patients Against Finding a Cure," 8 May 2020 The only way to interrupt the epidemics is to imagine that every single person, regardless of the test, can be infective. Jason Horowitz, New York Times, "Dip in Italy’s Cases Does Not Come Fast Enough for Swamped Hospitals," 23 Mar. 2020 Such a vaccine could carry a non-infective blueprint of the coronavirus protein, triggering the production of antibodies that would give the person getting vaccinated immunity from the disease. Elizabeth Weise, USA TODAY, "German vaccine company CureVac says no offers from Trump to buy exclusive vaccine access," 16 Mar. 2020 Kunal Dhamesha, an analyst at SBICAP Securities, said companies that make anti-infective and hormones therapies, such as GSK India, Pfizer (PFE), and Cipla, are most at risk from material shortages. Eoin Mcsweeney, CNN, "Drugmakers could be hit by the coronavirus. India is especially vulnerable," 19 Feb. 2020 Those larvae grow and molt in the fly's tissues before reaching an infective stage. Beth Mole, Ars Technica, "Cattle eyeball worms found in second human, raising worry of wriggly uprising," 6 Nov. 2019 The Kivu swarm, with its three new lineages of Ebola, may amount to about one or two quadrillion infective particles of the virus. Richard Preston, The New Yorker, "Is Ebola Evolving Into a More Deadly Virus?," 7 Aug. 2019 To spread from one dog to another, the larvae have to develop to a specific infective stage inside the mosquito. Elizabeth Weise, USA TODAY, "More dogs are getting sick as climate changes pushes diseases into new parts of the US," 15 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'infective.' 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 infective

14th century, in the meaning defined at sense 1

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Time Traveler for infective

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The first known use of infective was in the 14th century

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Last Updated

29 May 2020

Cite this Entry

“Infective.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infective. Accessed 29 May. 2020.

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More Definitions for infective

infective

adjective
in·​fec·​tive | \ in-ˈfek-tiv How to pronounce infective (audio) \

Medical Definition of infective

a : producing or capable of producing or transmitting infection infective oocysts are ingested with contaminated feed or water.— Douglas N. Stern … a strain of bacteria which forms spores that can remain infective for as long as fifty years.— Sue Hubbell Affected cats not yet showing signs of illness may shed the virus and be infective to other cats …Cat Fancy
b : caused by or resulting from an infection with one or more pathogenic agents infective bacterial endocarditis

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More from Merriam-Webster on infective

Thesaurus: All synonyms and antonyms for infective

Rhyming Dictionary: Words that rhyme with infective

Britannica English: Translation of infective for Arabic Speakers

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