Graafian follicle
/ˈɡrɑːfɪən
/noun Physiology
A fluid-filled structure in the mammalian ovary within which an ovum develops prior to ovulation.For some unexplained reason normally only one follicle becomes more successful than the others and towards mid-cycle this dominant Graafian follicle rises to the surface of the ovay.
Origin
Mid 19th century: named after R. de Graaf (1641–73), Dutch anatomist.