¹ Source: wiktionary.com
Definition of Platelets
1. platelet [n] - See also: platelet
Medical Definition of Platelets
1. A particle found in the bloodstream that binds to fibrinogen at the site of a wound to begin the blood clotting process. Platelets are formed in bone marrow, where they arise from cells called megakaryocytes. (09 Oct 1997)