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单词 oosphere
释义

oospheren.

Brit. /ˈəʊəsfɪə/, U.S. /ˈoʊoʊˌsfɪ(ə)r/
Forms: 1800s– oosphere, 1800s– oösphere.
Origin: Formed within English, by compounding; modelled on a French lexical item. Etymons: oo- comb. form, sphere n.
Etymology: < oo- comb. form + sphere n., after French oosphère (G. A. Thuret 1854). Compare German Oosphäre (1873 or earlier).
Botany and Mycology.
A female gamete, esp. of an alga or fungus.
ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > ovum or ootid
ovum1672
ovulum1698
ovule1762
ovigerm1851
ovicell1869
oosphere1875
ootid1898
the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [noun] > parts of > cells > reproductive cell or gamete > female gamete or sac containing
oospore1865
oosporange1867
oosphere1875
oosperm1892
1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 212 Oogonia are cells in which the female reproductive bodies or Oospheres are formed.
1893 Proc. Royal Soc. 53 44 The yellow pigment accompanying the antherozooids and oöspheres of Fucus as they ooze from the conceptacles at low tide probably serves as a colour screen.
1930 H. M. Fitzpatrick Lower Fungi vii. 153 As soon as the oospheres are differentiated the antheridia form delicate fertilization tubes.
1969 New Phytologist 68 752 The formation of an oogonium in which there is cleavage or rearrangement of the oogonial protoplasm to form one or more oospheres.
1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) ii. 168/1 Most oospheres are uninucleate.
This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022).
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n.1875
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