o·o·cyte (???-s?t?)n. A diploid cell from which an egg or ovum develops by meiosis. A primary oocyte divides to produce a polar body and a secondary oocyte, which divides again to produce the ovum and another polar body.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.oocyte (?????sa?t) n (Biology) an immature female germ cell that gives rise to an ovum after two meiotic divisionsCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014o?o?cyte (?o? ??sa?t) n. an immature egg cell of the animal ovary: in humans, one oocyte matures during the menstrual cycle while several others partially mature and disintegrate. [1890?95] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.oocyteAn immature ovum (egg).Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited