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Related to ovule: embryo sac


1. the ovum within the graafian follicle.
2. any small, egglike structure.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


(ov'yūl, ō'vū-),
1. The oocyte of a mammal, especially while still in the ovarian follicle.
2. A small beadlike structure bearing a fancied resemblance to an ovule.
Synonym(s): ovulum
[Mod. L. ovulum, dim. of L. ovum, egg]
Farlex Partner Medical Dictionary © Farlex 2012


(ŏv′yo͞ol, ō′vyo͞ol)
1. Botany A structure in seed plants that consists of the embryo sac surrounded by the nucellus and one or two integuments and that develops into a seed after it is fertilized.
2. Zoology A small or immature ovum.

ov′u·lar (ŏv′yə-lər, ō′vyə-), ov′u·lar′y (-lĕr′ē) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


1. The oocyte (ovum) of a mammal, especially while still in the ovarian follicle.
2. A small beadlike structure resembling an ovule.
Synonym(s): ovulum.
[Mod. L. ovulum, dim. of L. ovum, egg]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
Ovuleclick for a larger image
Fig. 241 Ovule . General structure.


a structure found in higher plants that contains an egg cell and develops into a seed after FERTILIZATION. In ANGIOSPERMS, the ovule develops within the ovary of a carpel, and consists of an inner EMBRYO SAC containing the egg cell surrounded by the NUCELLUS, which in turn is enclosed within two INTEGUMENTS. The ovule is connected to the ovary wall by the FUNICLE.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Patient discussion about ovule

Q. i just have my period last november 25 and ended on 28.when is my possible fertile and ovulation period please help me identify my fertile and ovulation period

A. If someone knew it, it'd solve the human race many problems with fertility. The problem is that ovulation (and thus, the period of possible fertility) happens 14 days BEFORE the onset of menses, so you know about it only retrospectively.

However there ways such as serial body temperature measuring, along with kits that measures the level of hormones in the urine in order to estimate the time of the coming ovulation, and help in timing intercourse.

You may read more about it here (www.mayoclinic.com/health/ovulation-signs/AN01521 ) but anyway, consulting a doctor (e.g. gynecologist) may be wise.

More discussions about ovule
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References in periodicals archive ?
With the J/M tree, where Ceratophyllum is sister to eudicots, well removed from Chloranthaceae, the most parsimonious position for Couperites is linked with Chloranthaceae, supported by its thick nexine, but attached below the crown group, because of its anatropous ovule. Positions within Chloranthaceae are at least one step less parsimonious, since they require an extra step in ovule curvature (either a reversal to anatropous or two origins of orthotropous).
Furthermore, ovule, plant structure that develops into a seed when fertilized.
Obturators, a transmitting plug of the placental region that facilitates entered of the polinic tube in the ovule, also occur in Liliaceae and some other groups; in Euphorbiaceae the obturator is in direct contact with the nucellus (Endress, 1994; Souza, 2009; De-Paula and Sajo, 2011).
In the population of each studied species we counted (1) a number of generative shoots per [m.sup.2], (2) number of anthodium per generative shoot and (3) number of ovules and achenes per anthodium.
12, 13, 15-17), their ovule parents "Shinano Red" (RYOKU AP-8, RYOKU AP9, RYOKU AP-11 and RYOKU AP-13) and "Shinano Sweet" (RYOKU AP-12) might be wrong.
One plant of each ploidy level was selected as control to evaluate ovule development without pollination.
The team used Neo-Penotran Forte, a combination metronidazole/miconazole ovule not generally available in the United States.
Ovule number per flower in a world of unpredictable pollination.
The results obtained demonstrate (1) a part of the route that pollen tubes need to follow to reach the ovules, (2) the strong promotive effect of pistil and ovule tissue on pollen germination and tube growth, and (3) the dependance of proper fertilization on the appropriate developmental stage of Brassicaceae flowers.
Various genes initiate the flower primordia (cells that differentiate from simple tissue to form flowers), flowering time and, finally, the actual development of the floral organs (stamens, pistils, ovules, pollen) that make up the flowers.
After insertion of the dinoprostone vaginal ovule, patients were instructed to rest in bed for 30 minutes.