megasporogenesisn.

Brit.

/ˌmɛɡəˌspɒrə(ʊ)ˈdʒɛnᵻsɪs/, U.S.

/ˌmɛɡəˌspɔrəˈdʒɛnəsəs/

Origin: Formed within English, by compounding. Etymons: megaspore n., -o- connective, -genesis comb. form.

Etymology: < megaspore n. + -o- connective + -genesis comb. form, after sporogenesis n. at sporo- comb. form .

Botany.

The process of formation of megaspores.

ΘΚΠ

the world > plants > part of plant > reproductive part(s) > spore or sporule > [noun] > formation of

sporogenesis1890

megasporogenesis1909

megagametogenesis1929

1909 Bot. Gaz. 48 165 Stages to illustrate megasporogenesis are unfortunately wanting at present.

1935 C. J. Chamberlain Gymnosperms Struct. & Evol. xii. 305 Less is known about the reduction in megasporogenesis, because it is tedious to get the desired stages.

1965 K. Esau Plant Anat. (ed. 2) xviii. 539 The floral parts concerned with megasporogenesis constitute, collectively, the gynoecium.

1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) v. 414/2 Inside the ovary are the ovules, the female sporophyte flower tissue in which megasporogenesis produces megaspores.

This is a new entry (OED Third Edition, June 2001; most recently modified version published online March 2022).

单词	megasporogenesis
释义	megasporogenesisn. Brit. /ˌmɛɡəˌspɒrə(ʊ)ˈdʒɛnᵻsɪs/, U.S. /ˌmɛɡəˌspɔrəˈdʒɛnəsəs/ Origin: Formed within English, by compounding. Etymons: megaspore n., -o- connective, -genesis comb. form. Etymology: < megaspore n. + -o- connective + -genesis comb. form, after sporogenesis n. at sporo- comb. form . Botany. The process of formation of megaspores. ΘΚΠ the world > plants > part of plant > reproductive part(s) > spore or sporule > [noun] > formation of sporogenesis1890 megasporogenesis1909 megagametogenesis1929 1909 Bot. Gaz. 48 165 Stages to illustrate megasporogenesis are unfortunately wanting at present. 1935 C. J. Chamberlain Gymnosperms Struct. & Evol. xii. 305 Less is known about the reduction in megasporogenesis, because it is tedious to get the desired stages. 1965 K. Esau Plant Anat. (ed. 2) xviii. 539 The floral parts concerned with megasporogenesis constitute, collectively, the gynoecium. 1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) v. 414/2 Inside the ovary are the ovules, the female sporophyte flower tissue in which megasporogenesis produces megaspores. This is a new entry (OED Third Edition, June 2001; most recently modified version published online March 2022). < n.1909
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