Platelet

**Semantic type:** Cell

**Definition:** An irregular, disc-shaped element in the blood that assists in blood clotting. Platelets are not blood cells, they are fragments of large bone marrow cells called megakaryocytes.

**Synonyms:** - Bizzozero Corpuscle - Deetjen Body - PLATELET - Platelets - Reticuloendothelial System, Platelets - Thrombocyte - Thrombocyte - Thrombocytes - platelet - thrombocyte