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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.


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


(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]


(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.


A structure inside a plant ovary containing female gamete. It develops into seed after fertilization.
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


[ˈəʊvjuːl] Nóvulo m


n (Zool) → Ovulum nt, → Ei nt; (Bot) → Samenanlage f


[ˈɒvjuːl] novulo
References in classic literature ?
But it is the opinion of most physiologists that there is no essential difference between a bud and an ovule in their earliest stages of formation; so that, in fact,
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.
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.
I believe that in Canada a vaginal ovule with vitamin C and probiotics is available (something to ponder).
sinensis variety Pera Rio was estimated at 25,488 pollen grains the number of ovule was estimated at 90 per flower.
The male flower has only one floral organ, whereas the female flower is composed of an exposed ovule with a long stalk (Jageret al.
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).
The ovule is anatropous, presenting micropyle, funicle, inner and outer integument and nucellus in both floral types.
Tomlinson (2012) incorporated morphological and physiological aspects of ovule behaviour in his analysis of the evolution of pollination mechanisms.