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ovule

Definitions

  • WordNet 3.6
    • n ovule a small or immature ovum
    • n ovule a small body that contains the female germ cell of a plant; develops into a seed after fertilization
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Webster's Revised Unabridged Dictionary
  • Interesting fact: A woman's sense of smell is most sensitive during ovulation.
    • n Ovule (Biol) The rudiment of a seed. It grows from a placenta, and consists of a soft nucleus within two delicate coatings. The attached base of the ovule is the hilum, the coatings are united with the nucleus at the chalaza, and their minute orifice is the foramen.
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Century Dictionary and Cyclopedia
    • n ovule A. little egg: specifically, in anat., physiol., and zoology, an ovulum or ovum, especially a small one, as that of a mammal, or one not yet matured and discharged from the ovary: specifically applied by Haeckel to the ovum or fertilizable but unfertilized egg-cell of the female, conformable with the use of spermule for the male sperm-cell. Its protoplasm is termed by him ovoplasm, and its nucleus ovococcus.
    • n ovule In botany, a young or rudimentary seed; a peculiar outgrowth or production of the carpel which, upon fertilization and the formation of an embryo within, becomes the seed. In the angiospermous gynœcium the ovules are normally produced along the margins, or some partof the margins, of the carpellary leaf, either immediately or by the intermediation of a placenta, which is a more or less evident development of the leaf-margins for the support of the ovules. Rarely ovules are developed from the whole internal surface of the ovary, or from various parts of it, in no definite order, directly from the walls, and without the intervention of anything which can be regarded as a placenta. In gymnosperms the ovules are borne on the face of the carpellary scale or at its base; or on metamorphosed leaf-margins, as in Cyeas; or, when there is no representative of the carpel, on the cauline axis, seemingly as a direct growth of it. (Gray.) The only essential part of the ovule is its nucleus, or nucellus, as it has been termed recently, which is usually invested by one or two coats, the primine. and secundine. The coats are sacs with a narrow orifice called the foramen, the closed vestige of which becomes the micropyle in the seed. The proper base of the ovule is the chalaza, and it may be either sessile or on a stalk (funiculus) of its own. The hilum is the scar left when the seed is detached from its funiculus. As to shape. ovules may be orthotropous, campylotropous, amphitropous, or anatropous: and as to position in the ovary, they may be erect, ascending, horizontal, pendulous, or suspended. In regard to numbers, they may be solitary, few, or indefinitely numerous, See cuts under accumbent, anatropous, funicle, magnolia, orthotrop?us, and ovary.
    • n ovule Some small body like or likened to an ovule: as, an ovule of Naboth. See ovulum.
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Chambers's Twentieth Century Dictionary
    • n Ovule ōv′ūl a little egg: the seed of a plant in its rudimentary state, growing from the placenta
    • ***

Etymology

Webster's Revised Unabridged Dictionary
Dim. of L. ovum, an egg: cf. F. ovule,. Cf. Ovolo Ovulum
Chambers's Twentieth Century Dictionary
Dim. of L. ovum, an egg.

Usage

In literature:

The number of the seeds produced is smaller and the ovules larger, probably also fewer in number.
"Darwin and Modern Science" by A.C. Seward and Others
The sheath clasps its string of ovules so closely that any inversion of the order is impossible.
"The Wonders of Instinct" by J. H. Fabre
But many exotic plants, with their ovules and pollen appearing perfectly sound, will not set any seed.
"The Variation of Animals and Plants Under Domestication, Volume II (of 2)" by Charles Darwin
Anatomists tell us that each human ovary contains as many as 30,000 of these ovules, or eggs.
"Treatise on the Diseases of Women" by Lydia E. Pinkham
In reality this could hardly coexist with the other ovule freely discharged.
"The Sexual Question" by August Forel
What giant power is concealed within that tiny ovule, apparently so soft and insignificant!
"Due South or Cuba Past and Present" by Maturin M. Ballou
A class of flowering plants, in which the ovules are not inclosed in an ovary.
"Principles of Geology" by Charles Lyell
The latter traced the tubes as far as the nucleus of the ovule.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3" by Various
Ovary laid open to show the ovule.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4" by Various
The ovary is one essential part: it contains the rudiments of seeds, called OVULES.
"The Elements of Botany" by Asa Gray
We thus learn that an ovule is not indispensable for the reception of the influence of the male element.
"Homo-culture" by Martin Luther Holbrook
The ovule is attached to the placenta, and destined to become the seed.
"Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5" by Various
One, that of ovulation, is so prominent that the other, the internal secretion, has been too much neglected.
"Psychotherapy" by James J. Walsh
Fruit, in the botanical sense, is developed from the flower as the result of fertilization of the ovule.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3" by Various
It therefore seems unlikely that in this species ovulation is dependent on copulation.
"Aspects of Reproduction and Development in the Prairie Vole (Microtus ochrogaster)" by Henry S. Fitch
Similarly, in the female line, half of the ovules would contain the determiner of the one character and half, that of the other.
"Being Well-Born" by Michael F. Guyer
The two females containing ovarian eggs on June 3, 1951, were retarded individuals, taken along with several others that had already ovulated.
"Life History and Ecology of the Five-lined Skink, Eumeces fasciatus" by Henry S. Fitch
The pollen tube is seen entering the ovule.
"A Civic Biology" by George William Hunter
The scales of the upper or middle series each bear one or two erect ovules.
"Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 5" by Various
The part of a pistil that contains the ovules.
"Michigan Trees" by Charles Herbert Otis
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In news:

Ovulation Affects a Woman's Choice of Mate.
Then at a high- fertility point (just before ovulation) and low- fertility point, the women were then asked about the quality of their relationship.
Then at two different points in her monthly cycle — at high fertility (just before ovulation) and at low fertility — each woman was asked about the quality of her romantic relationship.
"When I ovulate I'm all 'DEFICIT SPENDING SPURS THE ECONOMY' but when I'm not I want to privatize Social Security.".
If you have a regular cycle, using this ovulation calculator will give you a good idea of when you're most fertile.
Our fertility and ovulation calculator can tell you the best days to try to conceive.
Ovulation hormones make women 'choose clingy clothes'.
A variety of at-home diagnostic tests are available for detecting ovulation and pregnancy.
Up to 80 percent of women taking ovulation drugs begin to ovulate regularly, and if no other factors need treatment, over half may become pregnant within the first six induced ovulations.
This increased hormone level is what home ovulation kits can detect.
Irregular or abnormal ovulation accounts for approximately 25 percent of all infertility cases.
If you're trying to become pregnant, you can use an ovulation predictor kit to determine when you're ovulating.
When you ovulate, your cervix rises and opens for a day or so.
Others, like camels, llamas, and mink, only ovulate after intercourse.
During this window, have sex once a day, including ovulation day.
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In science:

Flowering, sex ratios, pollen-ovule ratios, fruit set, and reproductive effort of a dioecious tree, Myristica Insipida (Myristicacea ), in two different rain forest communities.
Overall and Pairwise Segregation Tests Based on Nearest Neighbor Contingency Tables
Flowering, sex ratios, pollen-ovule ratios, fruit set, and reproductive effort of a dioecious tree, Myristica Insipida (Myristicacea ), in two different rain forest communities.
New Tests of Spatial Segregation Based on Nearest Neighbor Contingency Tables
Flowering, sex ratios, pollen-ovule ratios, fruit set, and reproductive effort of a dioecious tree, Myristica Insipida (Myristicacea ), in two different rain forest communities.
Class-Specific Tests of Spatial Segregation Based on Nearest Neighbor Contingency Tables
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