Definition of lymphocyte
: any of the colorless weakly motile cells originating from stem cells and differentiating in lymphoid tissue (as of the thymus or bone marrow) that are the typical cellular elements of lymph, include the cellular mediators of immunity, and constitute 20 to 30 percent of the white blood cells of normal human blood — compare b cell, t cell
lymphocyticplay \ˌlim(p)-fə-ˈsi-tik\ adjective
Recent Examples of lymphocyte from the Web
For the treatment, researchers take blood from a person with diabetes and separate out the immune system cells (lymphocytes).
The research involves cancer-fighting immune cells called tumor-infiltrating lymphocytes, or TILs.
Theranos was out of range more often for lymphocytes, which are types of white blood cells; for a measure of hemoglobin; and for certain types of cholesterol.
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Origin and Etymology of lymphocyte
International Scientific Vocabulary
First Known Use: 1890See Words from the same year
LYMPHOCYTE Defined for Kids
Definition of lymphocyte for Students
: any of the white blood cells of the immune system that play a role in recognizing and destroying foreign cells, particles, or substances that have invaded the body
Medical Definition of lymphocyte
: any of the colorless weakly motile cells that originate from stem cells and differentiate in lymphoid tissue (as of the thymus or bone marrow), that are the typical cellular elements of lymph, that include the cellular mediators of immunity, and that constitute 20 to 30 percent of the white blood cells of normal human blood—see b cell, t cell
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