Definitions for "megakaryocyte"
A large bone marrow cell not usually found in the circulating blood; it is regarded as the precursors of blood platelets; it is up to 100 mm in diameter, with a polyploid nucleus. Also referred to as megacaryocyte, megalokaryocyte, and thromboblast.
A large cell that has a lobulated nucleus, is found especially in the bone marrow, and is the source of blood platelets.
large cell in the bone marrow that produces platelets released into the blood.