leukemia
noun
leu·ke·mia
lü-ˈkē-mē-ə 
: an acute or chronic disease in humans and other warm-blooded animals characterized by an abnormal increase in the number of white blood cells in the tissues and often in the blood
Examples of leukemia in a Sentence
Recent Examples on the Web
Their discovery could pave the way to simulate blood disorders like leukemia and produce long-lasting stem cells for transplants.
—
Neetika Walter, Interesting Engineering, 14 Oct. 2025
The 8-year-old boy had been battling acute promyelocytic leukemia, his family announced in July.
—Ryan Gaydos, FOXNews.com, 13 Oct. 2025
She was nominated for her work as an activist in Warren Beatty’s Reds (1981) and as a woman with leukemia in Marvin’s Room (1996) as well.
—Duane Byrge, HollywoodReporter, 11 Oct. 2025
Here’s how Miami is celebrating The 15-year-old Italian — born in London to Italian parents and later living in Italy — died of leukemia in 2006, but his impact is still felt by the Catholic community worldwide — including in Miami.
—Lauren Costantino, Miami Herald, 10 Oct. 2025
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Neetika Walter, Interesting Engineering, 14 Oct. 2025
The 8-year-old boy had been battling acute promyelocytic leukemia, his family announced in July.
—Ryan Gaydos, FOXNews.com, 13 Oct. 2025
She was nominated for her work as an activist in Warren Beatty’s Reds (1981) and as a woman with leukemia in Marvin’s Room (1996) as well.
—Duane Byrge, HollywoodReporter, 11 Oct. 2025
Here’s how Miami is celebrating The 15-year-old Italian — born in London to Italian parents and later living in Italy — died of leukemia in 2006, but his impact is still felt by the Catholic community worldwide — including in Miami.
—Lauren Costantino, Miami Herald, 10 Oct. 2025
See All Example Sentences for leukemia
Cite this Entry
“Leukemia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/leukemia. Accessed 17 Oct. 2025.
Copy CitationKids Definition
leukemia
noun
leu·ke·mia
lü-ˈkē-mē-ə
: a disease of warm-blooded animals including human beings that is a kind of cancer in which there is an abnormal increase in the number of white blood cells in the tissues and often in the blood
Medical Definition
leukemia
noun
leu·ke·mia
lü-ˈkē-mē-ə
variants
also leucemia
or chiefly British leukaemia
also leucaemia
lü-ˈkē- also lü-ˈsē-
: an acute or chronic disease of unknown cause in humans and other warm-blooded animals that involves the blood-forming organs, is characterized by an abnormal increase in the number of white blood cells in the tissues of the body with or without a corresponding increase of those in the circulating blood, and is classified according to the type of white blood cell most prominently involved see acute lymphoblastic leukemia, acute myelogenous leukemia, chronic lymphocytic leukemia, chronic myelogenous leukemia, feline leukemia, lymphoblastic leukemia, lymphocytic leukemia, monocytic leukemia, myelogenous leukemia, promyelocytic leukemia
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