oogoniumn.

Brit.

/əʊə(ʊ)ˈɡəʊnɪəm/, U.S.

/ˌoʊoʊˈɡoʊniəm/

Inflections: Plural oogonia.

Forms: 1800s– oogonium, 1900s– oögonium.

Origin: A borrowing from German. Etymon: German Oogonium.

Etymology: < German Oogonium (N. Pringsheim 1858, in Jahrbücher f. wissenschaftliche Bot. 1 9; 1895 or earlier in sense 2) < oo- oo- comb. form + ancient Greek γόνος (see gono- comb. form) + scientific Latin -ium (see -y suffix⁴). Compare Hellenistic Greek ὠογονία laying of eggs.

1. Mycology and Botany. The female gametangium of certain algae, fungi, etc., usually a rounded cell or sac containing one or more oospheres.Usually distinguished from the flask-shaped archegonium of the mosses and ferns, but sometimes including this.

ΘΚΠ

the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [noun] > parts of > archegonium or female sex organ

archegonium1854

pistillidium1854

oogonium1867

trichogyne1875

procarp1877

venter1887

1867 J. Hogg Microscope (ed. 6) ii. i. 293 Organs similar to those long since discovered by Tulasne in Peronospora, which have been called Oogonia.

1885 E. Klein Micro-org. 146 At the end of a mycelial thread a cell grows up into a spherical large ball, the oogonium.

1946 A. Nelson Princ. Agric. Bot. xxv. 491 On the death of the host the fungus develops sex organs. First a peculiar sac, a female organ called an oogonium, is formed.

1984 D. A. Roberts & C. W. Boothroyd Fund. Plant Pathol. (ed. 2) xviii. 233 A short branch of a hypha swells at the tip to form..the oogonium.

1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) ii. 161/2 Within a female gametangium, each oogonium produces one, two, four, or eight eggs. Oogonia containing ripe eggs are released into the water.

2. Biology. A primordial female reproductive cell that gives rise to primary oocytes by mitosis.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > ovum or ootid > ovocyte or oogonium

ooblast1885

oogone1889

oocyte1895

oogonium1895

ovocyte1896

secondary oocyte1897

ovogonium1906

1895 Jrnl. Royal Microsc. Soc. 511 The oogonia show a nucleus with few chromatin fragments and a very delicate, but dense linin-framework.

1920 L. Doncaster Introd. Study Cytol. v. 61 After a number of divisions..the spermatogonia and oogonia cease to divide and begin to increase considerably in size.

1940 N. C. Fassett Man. Aquatic Plants 40 The two genera..can sometimes be differentiated by use of a hand lens, but for certainty the tip of the oögonium (egg-bearing case) must be examined with a microscope.

1970 E. J. Ambrose & D. M. Easty Cell Biol. x. 330 In the female the oögonia, corresponding to spermatogonia, give rise to oöcytes.

1997 G. S. Helfman et al. Diversity of Fishes ix. 120/1 Oogenesis..progresses through various stages involving oogonia, primary and secondary oocytes, and finally ova or eggs.

This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022).

单词	oogonium
释义	oogoniumn. Brit. /əʊə(ʊ)ˈɡəʊnɪəm/, U.S. /ˌoʊoʊˈɡoʊniəm/ Inflections: Plural oogonia. Forms: 1800s– oogonium, 1900s– oögonium. Origin: A borrowing from German. Etymon: German Oogonium. Etymology: < German Oogonium (N. Pringsheim 1858, in Jahrbücher f. wissenschaftliche Bot. 1 9; 1895 or earlier in sense 2) < oo- oo- comb. form + ancient Greek γόνος (see gono- comb. form) + scientific Latin -ium (see -y suffix⁴). Compare Hellenistic Greek ὠογονία laying of eggs. 1. Mycology and Botany. The female gametangium of certain algae, fungi, etc., usually a rounded cell or sac containing one or more oospheres.Usually distinguished from the flask-shaped archegonium of the mosses and ferns, but sometimes including this. ΘΚΠ the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [noun] > parts of > archegonium or female sex organ archegonium1854 pistillidium1854 oogonium1867 trichogyne1875 procarp1877 venter1887 1867 J. Hogg Microscope (ed. 6) ii. i. 293 Organs similar to those long since discovered by Tulasne in Peronospora, which have been called Oogonia. 1885 E. Klein Micro-org. 146 At the end of a mycelial thread a cell grows up into a spherical large ball, the oogonium. 1946 A. Nelson Princ. Agric. Bot. xxv. 491 On the death of the host the fungus develops sex organs. First a peculiar sac, a female organ called an oogonium, is formed. 1984 D. A. Roberts & C. W. Boothroyd Fund. Plant Pathol. (ed. 2) xviii. 233 A short branch of a hypha swells at the tip to form..the oogonium. 1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) ii. 161/2 Within a female gametangium, each oogonium produces one, two, four, or eight eggs. Oogonia containing ripe eggs are released into the water. 2. Biology. A primordial female reproductive cell that gives rise to primary oocytes by mitosis. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > ovum or ootid > ovocyte or oogonium ooblast1885 oogone1889 oocyte1895 oogonium1895 ovocyte1896 secondary oocyte1897 ovogonium1906 1895 Jrnl. Royal Microsc. Soc. 511 The oogonia show a nucleus with few chromatin fragments and a very delicate, but dense linin-framework. 1920 L. Doncaster Introd. Study Cytol. v. 61 After a number of divisions..the spermatogonia and oogonia cease to divide and begin to increase considerably in size. 1940 N. C. Fassett Man. Aquatic Plants 40 The two genera..can sometimes be differentiated by use of a hand lens, but for certainty the tip of the oögonium (egg-bearing case) must be examined with a microscope. 1970 E. J. Ambrose & D. M. Easty Cell Biol. x. 330 In the female the oögonia, corresponding to spermatogonia, give rise to oöcytes. 1997 G. S. Helfman et al. Diversity of Fishes ix. 120/1 Oogenesis..progresses through various stages involving oogonia, primary and secondary oocytes, and finally ova or eggs. This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022). < n.1867
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