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.

Examples of infective in a Sentence

Recent Examples on the Web The company is building technology to help discover anti-infective drugs. Casey Ross, STAT, 10 Mar. 2022 Providing pipes could be an important tool for reducing HIV and HCV outbreaks, and growing problems related to bacterial infections, sepsis, and infective endocarditis in the US. Ricky Blumenthal, Essence, 23 Feb. 2022 Much as for antibiotics, the commercial market for anti-infective antibodies has essentially failed. Laura Defrancesco, Scientific American, 6 Jan. 2022 But a University of Hong Kong study found that Omicron is less than one-tenth as infective in lung cells compared with the Delta variant. Marty Makary, WSJ, 21 Dec. 2021 Antimicrobial resistance — the process by which bacteria, fungi, and other microbes become immune to the effects of drugs designed to kill them — happens every time someone takes an antibiotic or other anti-infective drug. Patrick Skerrett, STAT, 8 Apr. 2021 Kerala's containment of the first wave also means a higher share of its population is without antibodies and therefore vulnerable to the highly-infective Delta variant, says John. Biman Mukherji, Fortune, 10 Sep. 2021 Vaccines have been the big winners, but there were some gains for anti-infective therapies as well. Peter Bak, STAT, 28 Apr. 2021 But scientists hypothesize that a combination of habitat change, pesticide exposure and the emergence of infective chytrid fungus led to their demise. Douglas Main, Scientific American, 13 Dec. 2012 See More

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.

First Known Use of infective

14th century, in the meaning defined above

History and Etymology for infective

Middle English infectif "causing disease, infectious," borrowed from Medieval Latin infectīvus "infectious, poisonous" (Latin, "used for dyeing"), from Latin infectus, past participle of inficere "to dye, discolor, taint, contaminate with disease" + -īvus -ive — more at infect

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

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infectious vaginitis

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Cite this Entry

“Infective.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infective. Accessed 17 Aug. 2022.

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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

More from Merriam-Webster on infective

Thesaurus: All synonyms and antonyms for infective

Britannica English: Translation of infective for Arabic Speakers

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