Definition of Platelet
1. Noun. Tiny bits of protoplasm found in vertebrate blood; essential for blood clotting.
Definition of Platelet
1. Noun. (hematology cytology) A small colorless disk-shaped particle found in the blood of mammals, which plays an important role in the formation of blood clots. ¹
¹ Source: wiktionary.com
Definition of Platelet
1. a small, flattened body [n -S]
Medical Definition of Platelet
1.
A discoid cell (3m diameter) found in large numbers in blood, important for blood coagulation and for haemostasis by repairing breaches (small breaks) in the walls of blood vessels.
Platelet _ granules contain lysosomal enzymes, dense granules contain ADP (a potent platelet aggregating factor) and serotonin (a vasoactive amine). They also release platelet-derived growth factor which presumably contributes to later repair processes by stimulating fibroblast proliferation.
Synonym: thrombocytes.
(09 Oct 1997)
Lexicographical Neighbors of Platelet
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