neur·​amin·​i·​dase | \ ˌnu̇r-ə-ˈmi-nə-ˌdās How to pronounce neuraminidase (audio) , ˌnyu̇r-, -ˌdāz\

Definition of neuraminidase

: a hydrolytic enzyme that occurs on the surface of the pneumococcus, influenza-causing viruses, and some paramyxoviruses as an antigen and that splits mucoproteins by breaking a glucoside link

Examples of neuraminidase in a Sentence

Recent Examples on the Web

There are only two other classes of flu drugs, neuraminidase inhibitors (drugs like Tamiflu, Relenza, Rapivab) and the adamantane drugs (amantadine and rimantadine). Helen Branswell, STAT, "A flu drug — shown to reduce the duration of symptoms — could upend treatment in U.S.," 27 June 2018 All three are in a class called neuraminidase inhibitors. NBC News, "New, fast-acting flu drug gets priority FDA review," 26 June 2018 The enclosing fatty envelope (green) contains two types of protein, haemagglutinin and neuraminidase (the 'H' and 'N' in the strain's codename), the levels of which determine the strain of virus. Doug Criss, CNN, "5 things for March 28: North Korea & China, Sacramento, water park death, new organ," 28 Mar. 2018 With 18 hemagglutinin varieties and 11 types of neuraminidase — most carried by birds — there are lots of potential combinations. Time, "Scientists Seek Universal Flu Shot 100 Years After Deadly Pandemic," 19 Jan. 2018 There is a group of antivirals called the neuraminidase inhibitors that are effective in treating flu, especially if treatment starts early, within two days of onset. Arnold Monto,, "4 flu facts you need to know to protect yourself," 24 Jan. 2018 Immune responses to targets other than HA's head, including HA's stem and a second viral surface protein, neuraminidase, receive scant attention. Jon Cohen, Science | AAAS, "Why flu vaccines so often fail," 20 Sep. 2017 Scientists classify type A viruses into subtypes based on the combinations of the two molecules that cover the surface of the virus, hemagglutinin and neuraminidase. The Washington Post, The Mercury News, "A long-lasting flu shot may emerge – but not this year," 8 Jan. 2017

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

1957, in the meaning defined above

History and Etymology for neuraminidase

neuraminic acid, an amino acid + -ide + -ase

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The first known use of neuraminidase was in 1957

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neur·​amin·​i·​dase | \ ˌn(y)u̇r-ə-ˈmin-ə-ˌdās, -ˌdāz How to pronounce neuraminidase (audio) \

Medical Definition of neuraminidase

: a hydrolytic enzyme that occurs on the surface of the pneumococcus, the orthomyxoviruses, and some paramyxoviruses and that cleaves terminal acetylated neuraminic acids from sugar residues (as in glycoproteins and mucoproteins)

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