Medical Definition of Platelet

Platelet: An irregular, disc-shaped element in the blood that assists in blood clotting. During normal blood clotting, the platelets clump together (aggregate). Although platelets are often classed as blood cells, they are actually fragments of large bone marrow cells called megakaryocytes.

CONTINUE SCROLLING OR CLICK HERE FOR RELATED SLIDESHOW

SLIDESHOW

Heart Disease: Causes of a Heart Attack See Slideshow

Health Solutions From Our Sponsors

Reviewed on 12/27/2018