from the GNU version of the Collaborative International Dictionary of English.
- adjective (Anat.) Pertaining to, or discovered by, Regnier de Graaf, a Dutch physician.
- adjective or vesicles, small cavities in which the ova are developed in the ovaries of mammals, and by the bursting of which they are discharged.
Sorry, no etymologies found.
• Conversely, the oocytes are responsible for proliferation and differentiation of follicular cells. factors produced in the oocyte help in the formation and maturation of graafian follicles.
• These stromal cells form ovarian or graafian follicles that surround ova and protect them.
Mammalian Graafian Follicle - During the youth of a female, several hundred thousand graafian follicles may be present in the ovaries, each of which contains an oocyte surrounded by a single stratum of cells.
One type of simple cyst, which is the most common type of ovarian cyst, is the graafian follicle cyst, follicular cyst, or dentigerous cyst.
 "Much less uncommon than the absence of either ovary is the persistence of both through the whole or greater part of life in the condition which they present in infancy and early childhood, with scarcely a trace of graafian vesicles in their tissue.