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Related to ovule: embryo sac


 (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.

[New Latin ōvulum, diminutive of Latin ōvum, egg; see awi- in Indo-European roots.]

ov′u·lar (ŏv′yə-lər, ō′vyə-), ov′u·lar′y (-lĕr′ē) adj.
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.


1. (Botany) a small body in seed-bearing plants that consists of the integument(s), nucellus, and embryosac (containing the egg cell) and develops into the seed after fertilization
2. (Zoology) zoology an immature ovum
[C19: via French from Medieval Latin ōvulum a little egg, from Latin ōvum egg]
ˈovular adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈɒv yul, ˈoʊ vyul)

1. the structure in seed plants that contains the embryo sac and that develops into a seed after fertilization.
2. a small egg.
[1820–30; < Latin ōvulum]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


(ō′vyo͞ol, ŏv′yo͞ol)
A small part in a seed-bearing plant that becomes a seed after its egg cell has been fertilized by a male cell. See more at flower.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


A structure inside a plant ovary containing female gamete. It develops into seed after fertilization.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ovule - a small body that contains the female germ cell of a plantovule - a small body that contains the female germ cell of a plant; develops into a seed after fertilization
reproductive structure - the parts of a plant involved in its reproduction
chalaza - basal part of a plant ovule opposite the micropyle; where integument and nucellus are joined
nucellus - central part of a plant ovule; contains the embryo sac
micropyle - minute opening in the wall of an ovule through which the pollen tube enters
amphitropous ovule - a partly inverted ovule turned back 90 degrees on its stalk
anatropous ovule - a completely inverted ovule turned back 180 degrees on its stalk
campylotropous ovule - a curved ovule with the micropyle almost touching the funiculus
orthotropous ovule - a completely straight ovule with the micropyle at the apex
seed - a mature fertilized plant ovule consisting of an embryo and its food source and having a protective coat or testa
2.ovule - a small or immature ovum
egg cell, ovum - the female reproductive cell; the female gamete
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[ˈəʊvjuːl] Nóvulo m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


n (Zool) → Ovulum nt, → Ei nt; (Bot) → Samenanlage f
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007


[ˈɒvjuːl] novulo
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in classic literature ?
The colour was caused by little gelatinous balls, about the fifth of an inch in diameter, in which numerous minute spherical ovules were imbedded: they were of two distinct kinds, one being of a reddish colour and of a different shape from the other.
In the case of the prawn-like crabs, their movements were as coinstantaneous as in a regiment of soldiers; but this cannot happen from anything like voluntary action with the ovules, or the confervae, nor is it probable among the infusoria.
'sports' are extremely rare under nature, but far from rare under cultivation; and in this case we see that the treatment of the parent has affected a bud or offset, and not the ovules or pollen.
'sports' support my view, that variability may be largely attributed to the ovules or pollen, or to both, having been affected by the treatment of the parent prior to the act of conception.
These remarks are of course confined to the first appearance of the peculiarity, and not to its primary cause, which may have acted on the ovules or male element; in nearly the same manner as in the crossed offspring from a short-horned cow by a long-horned bull, the greater length of horn, though appearing late in life, is clearly due to the male element.
Some Ascarina species have the simplest possible unisexual flowers, which consist of one stamen or one carpel containing one ovule, borne in the axils of bracts in spicate inflorescences, although others have stamen numbers ranging from two to five, lateral bracts associated with the stamen and/or carpel, groups of two carpels, or both a stamen and a carpel (Swamy, 1953; Smith, 1976, 1981; Moore, 1977; Jeremie, 1980).
sinensis variety Pera Rio was estimated at 25,488 pollen grains the number of ovule was estimated at 90 per flower.
Four stages of sepal, three stages of petal, five stages of stamen, and seven stages of ovule samples were collected from pineapple MD2 variety.
Both species have bitegmic and anatropous ovule, obturator, trichomes and a resinuous gland, which is composed of flange-like structures that are modified bractlets (Webster and Webster, 1972).
While most botanists are satisfied with external features of the achene and a few researches have analyzed the development of the embryo and ovule, little attention has been given to the seed-coat of Asteraceae (Compositae) (CORNER, 1976).
To estimate seed production characteristics we used the potential seed production (PSP), actual seed production (ASP) and seed: ovule ratio showing the ratio of the ASP and the PSP.