malaria
noun
ma·lar·ia
mə-ˈler-ē-ə 
1
a
: a human disease that is caused by sporozoan parasites (genus Plasmodium) in the red blood cells, is transmitted by the bite of anopheline mosquitoes, and is characterized by periodic attacks of chills and fever
b
: any of various diseases of birds and mammals caused by blood protozoans
2
Examples of malaria in a Sentence
Recent Examples on the Web
Huxham’s was prescribed for fevers, and its base ingredient would turn out to be important in treating malaria.
—
Literary Hub, 11 Mar. 2026
Unraveling the evolution of this dietary preference enables a deeper understanding of how malaria can spread from disease-causing pathogens carried by these mosquitoes today.
—Ashley Strickland, CNN Money, 11 Mar. 2026
Using x-ray fluorescence spectrometry, scholars determined that the ancient off-white fluid was composed of calcite, huntite, and miniscule flecks of yellow orpiment, a highly toxic sulfide of arsenic that Egyptians also used in medicine to treat syphilis and malaria.
—News Desk, Artforum, 9 Mar. 2026
The Canal Zone’s white residents were far more likely to have access to health services and have proper sanitation; Afro Panamanian and immigrant workers from Barbados, the Antilles, Jamaica and other Caribbean countries were much more likely to be exposed to – and die from – malaria.
—Brendan Frizzell, The Conversation, 27 Feb. 2026
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Literary Hub, 11 Mar. 2026
Unraveling the evolution of this dietary preference enables a deeper understanding of how malaria can spread from disease-causing pathogens carried by these mosquitoes today.
—Ashley Strickland, CNN Money, 11 Mar. 2026
Using x-ray fluorescence spectrometry, scholars determined that the ancient off-white fluid was composed of calcite, huntite, and miniscule flecks of yellow orpiment, a highly toxic sulfide of arsenic that Egyptians also used in medicine to treat syphilis and malaria.
—News Desk, Artforum, 9 Mar. 2026
The Canal Zone’s white residents were far more likely to have access to health services and have proper sanitation; Afro Panamanian and immigrant workers from Barbados, the Antilles, Jamaica and other Caribbean countries were much more likely to be exposed to – and die from – malaria.
—Brendan Frizzell, The Conversation, 27 Feb. 2026
See All Example Sentences for malaria
Cite this Entry
“Malaria.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/malaria. Accessed 18 Mar. 2026.
Copy CitationKids Definition
malaria
noun
ma·lar·ia
mə-ˈler-ē-ə
: a disease caused by protozoan parasites in the red blood cells, passed from one individual to another by the bite of mosquitoes, and marked by periodic attacks of chills and fever
Medical Definition
malaria
noun
ma·lar·ia
mə-ˈler-ē-ə
1
: an acute or chronic disease caused by the presence of sporozoan parasites of the genus Plasmodium in the red blood cells, transmitted from an infected to an uninfected individual by the bite of anopheline mosquitoes, and characterized by periodic attacks of chills and fever that coincide with mass destruction of blood cells and the release of toxic substances by the parasite at the end of each reproductive cycle
malaria remains the greatest single cause of debilitation and death throughout the world—The Journal of the American Medical Association
see falciparum malaria, vivax malaria
The Journal of the American Medical Association2
: any of various diseases of birds and mammals that are more or less similar to malaria of human beings and are caused by blood protozoans
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