white blood cell

noun

: any of the blood cells that are colorless, lack hemoglobin, contain a nucleus, and include the lymphocytes, monocytes, neutrophils, eosinophils, and basophils

called also leukocyte, white blood corpuscle, white cell

compare red blood cell

Examples of white blood cell in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Ars Video Lab results showed that his blood had abnormally high concentrations of red and white blood cells, and low levels of platelets. Beth Mole, ArsTechnica, 28 May 2025 The researchers measured telomere length in white blood cell samples taken from participants at study start, then two years and four years later. Tom Gavin, EverydayHealth.com, 27 May 2025 Chen says clinical trials that evaluate droplets from many different patients will also be necessary to ensure the tests work with samples that have varying pH levels, white blood cell counts and fructose concentrations. Joanna Thompson, Scientific American, 14 May 2025 The plan was to resume chemotherapy afterward but a combination of positive margins (residual cancer cells) and a white blood cell count that never rebounded prevented her from continuing. Jordan Greene, People.com, 2 May 2025 See All Example Sentences for white blood cell

Word History

First Known Use

1852, in the meaning defined above

Time Traveler
The first known use of white blood cell was in 1852

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Cite this Entry

“White blood cell.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/white%20blood%20cell. Accessed 3 Jun. 2025.

Kids Definition

white blood cell

noun
: a colorless blood cell (as a lymphocyte) that lacks hemoglobin and contains a nucleus

called also leukocyte, white blood corpuscle, white cell, white corpuscle

Medical Definition

white blood cell

noun
: any of the blood cells of the immune system that are colorless, lack hemoglobin, contain a nucleus, and include the lymphocytes, monocytes, neutrophils, eosinophils, and basophils along with their precursors and derivatives (as macrophages) : leukocyte
abbreviation WBC

called also white blood corpuscle, white cell, white corpuscle

compare red blood cell

More from Merriam-Webster on white blood cell

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