Graafian follicle

[ grah-fee-uh n ]
/ ˈgrɑ fi ən /

noun (sometimes lowercase)

one of the small vesicles containing a developing ovum in the ovary of a mammal.



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Origin of Graafian follicle

1835–45; named after Regnier de Graaf (died 1673), Dutch anatomist; see -ian Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for graafian follicle

Graafian follicle
/ (ˈɡrɑːfɪən) /


a fluid-filled vesicle in the mammalian ovary containing a developing egg cell

Word Origin for Graafian follicle

C17: named after R. de Graaf (1641–73), Dutch anatomist
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for graafian follicle

Graafian follicle


A mature ovarian follicle in which the oocyte attains its full size and the surrounding follicular cells are permeated by one or more fluid-filled cavities.secondary follicle vesicular ovarian follicle
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.