oosphere

American  

[oh-uh-sfeer] / ˈoʊ əˌsfɪər /

noun

Biology.

1. an unfertilized egg within an oogonium.

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oosphere British  

/ ˈəʊəˌsfɪə /

noun

1. a large female gamete produced in the oogonia of algae and fungi

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oosphere Scientific  

/ ō′ə-sfîr′ /

1. A large nonmotile female gamete formed in an oogonium, such as the eggs formed in the oogonium of an oomycete.

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Etymology

Origin of oosphere

First recorded in 1870–75; oo- + -sphere

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Example Sentences

See Examples For:

oosphere

In Cystopus Bliti the oosphere contains numerous nuclei, and all the male nuclei from the antheridium pass into it, the male and female nuclei then fusing in pairs.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" by Various

We thus have a process of “multiple fertilization”; the oosphere really represents a large number of undifferentiated gametes and has been termed a coenogamete.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" by Various

The protoplasm in one of these protuberances arranges itself into a round mass--the oosphere or female cell.

From Scientific American Supplement, No. 531, March 6, 1886 by Various

These are of the ordinary type of those organs, namely, a broad lower portion, containing a naked oosphere and a long narrow neck with a central canal leading to the oosphere.

From Scientific American Supplement, No. 531, March 6, 1886 by Various

Guided by the synergidae one male-cell passes into the oosphere with which it fuses, the two nuclei uniting, while the other fuses with the definitive nucleus, or, as it is also called, the endosperm nucleus.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 by Various

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