Definition of ovum Ovum
/owˈvʌm/ - [owvum] - o•vum
We found 8 definitions of ovum from 7 different sources.
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What does ovum mean?
WordNet
NounPlural: ova |
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| ovum - the female reproductive cell; the female gamete | ||
| egg cell | ||
| gamete a mature sexual reproductive cell having a single set of unpaired chromosomes | ||
| female reproductive system the reproductive system of females | ||
| egg animal reproductive body consisting of an ovum or embryo together with nutritive and protective envelopes; especially the thin-shelled reproductive body laid by e.g. female birds | ||
| ootid mature ovum after penetration by sperm but before the formation of a zygote | ||
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Webster DictionaryWebster's Unabridged Dictionary 📘
- ovum (n.)
A more or less spherical and transparent mass of granular protoplasm, which by a process of multiplication and growth develops into a mass of cells, constituting a new individual like the parent; an egg, spore, germ, or germ cell. See Illust. of Mycropyle. - ovum (n.)
One of the series of egg-shaped ornaments into which the ovolo is often carved.
OmegaWiki DictionaryOmegaWiki Dictionary Ω
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ovum
The female gamete of an animal or plant, capable of fusing with a male gamete to produce a zygote.
Chambers DictionaryChamber's 20th Century Dictionary 📕
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ovum
ō′vum, n. an egg: (biol.) the egg-cell, in all organisms the starting-point of the embryo, development beginning as soon as it is supplemented by the male-cell or spermatozoon:—pl. O′va. [L.]
Wikipedia 
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An ovum (Latin: "egg", Plural: Ova) is the name for the haploid female reproductive cell.
Haploid reproductive cells are also called gametes. If the cell is still young (and developing) the term ovule is commonly used. In some plants, like algae this type of cell is called oosphere.
Production.
Ova are made and released by a female's ovaries. A birth, a mammal has all of her eggs, and from puberty, she releases an egg once a month until none are left. This is called oogenisis.
In humans.
When the ovum is fertilised by a male's sperm, it becomes a zygote, which develops into a new organism. The ovum is fertilized inside the female body, and the embryo then develops inside the uterus, being fed by the mothers placenta.
The ovum is the largest cell in the human body. You can see it without a microscope. The human ovum is between 100 and 200 µm long.
In plants.
In fungi and many plants, ova are made inside archegonia through mitosis. The archegonium has a long 'neck' with the egg cell inside. When the egg is mature, the neck opens and sperm swims in to fertilize the egg.
In flowering plants, the female gametes are made of only eight cells, called the embryo sac, inside the ovule. The cell closest to the opening of the embryo sac becomes the egg cell. When pollinated, sperm swims into the embryo sac and fertilizes the egg. The zygote then develops into an embryo inside the ovule.
Part of speech
🔤- ovum, noun, singular of ova.
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