haemophilus

noun

hae·​moph·​i·​lus hē-ˈmä-fə-ləs How to pronounce haemophilus (audio)
plural haemophili hē-ˈmä-fə-lē How to pronounce haemophilus (audio)
: any of a genus (Haemophilus) of nonmotile, gram-negative, rod-shaped bacteria that include several important pathogens (such as Haemophilus influenzae associated with meningitis, pneumonia, conjunctivitis, and otitis media)

Note: Haemophili are parasitic on the mucous membranes of humans and other, mainly warm-blooded animals. They prefer aerobic conditions but are also capable of living under anaerobic conditions.

see hib

Examples of haemophilus in a Sentence

Recent Examples on the Web Overall coverage for the primary childhood vaccine series in Michigan, which includes vaccines that prevent measles, mumps, rubella, tetanus, diphtheria, pertussis, haemophilus influenzae, hepatitis, polio, chickenpox and pneumonia, fell to 68.5% in the first quarter of 2022. Kristen Jordan Shamus, Detroit Free Press, 9 Aug. 2022 Shots for rotavirus, pneumococcal infections, haemophilus influenzae type B, bacterial meningitis and hepatitis B declined by 5% to 10%, with human papillomavirus vaccines down by 4%. Erin Alberty, The Salt Lake Tribune, 1 Nov. 2021 Mandatory immunizations include measles, mumps and rubella; diphtheria; pertussis (whooping cough); tetanus; poliomyelitis; and haemophilus influenzae type B, an infection that can lead to bacterial meningitis. Jenna Carlesso, courant.com, 30 Mar. 2021 Mandatory childhood immunizations include measles, mumps and rubella, diphtheria, pertussis (whooping cough), tetanus, poliomyelitis, and haemophilus influenzae type B, an infection that can lead to bacterial meningitis. Jenna Carlesso, courant.com, 15 Dec. 2020 The reports involve different regions of the state and different diseases, including pertussis (whooping cough), influenza, haemophilus influenzae infection, Legionnaire’s disease and pneumonia caused by rhinovirus or human metapneumovirus. USA TODAY, 22 July 2019 The cause was haemophilus influenzae sepsis, said his wife, Rosilyn Alter. Washington Post, 27 Jan. 2018 Some the bacteria identified in the study include staphylococcus, corynebacterium, haemophilus and neisseria. Don Sweeney, miamiherald, 4 Aug. 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'haemophilus.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1942, in the meaning defined above

Time Traveler
The first known use of haemophilus was in 1942

Dictionary Entries Near haemophilus

Cite this Entry

“Haemophilus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/haemophilus. Accessed 25 May. 2024.

Medical Definition

haemophilus

noun
hae·​moph·​i·​lus hē-ˈmäf-ə-ləs How to pronounce haemophilus (audio)
1
capitalized : a genus of nonmotile, gram-negative, rod-shaped bacteria of the family Pasteurellaceae that include several important pathogens (as H. influenzae associated with meningitis, pneumonia, conjunctivitis, and otitis media and H. ducreyi of chancroid)
2
plural haemophili -lē How to pronounce haemophilus (audio) : any bacterium of the genus Haemophilus

Note: Bacteria of the genus Haemophilus are parasitic on the mucous membranes of humans and other, mainly warm-blooded animals. They prefer aerobic conditions but are also capable of living under anaerobic conditions.

see hib
Love words? Need even more definitions?

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