macromeren.

Brit.

/ˈmakrə(ʊ)mɪə/, U.S.

/ˈmækroʊˌmɪ(ə)r/

Origin: Formed within English, by compounding. Etymons: macro- comb. form, -mere comb. form.

Etymology: < macro- comb. form + -mere comb. form. Compare micromere n. Compare French macromère (1905; 1873 in Larousse in different senses).

Embryology.

A relatively large blastomere, formed by unequal division in the fertilized ovum, and usually appearing at the vegetal pole.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > [noun] > blastula

periblastula1876

macromere1877

micromere1877

blastula1887

amphiblastula1888

1877 T. H. Huxley Man. Anat. Invertebrated Animals viii. 483 Those [blastomeres] which proceed from the macromere long remain larger and more granular than those which proceed from the micromere.

1909 J. W. Jenkinson Exper. Embryol. 213 Eight instead of the usual four macromeres were found in the Trocophore larva.

1969 R. F. Chapman Insects xviii. 349 In Hypogastrura cleavage is unequal with the formation of micro- and macromeres.

1984 L. W. Browder Developmental Biol. (ed. 2) x. 444 This [unequal division] produces four small cells, the micromeres, clustered at the vegetal pole and four large cells, the macromeres.

Derivatives

macroˈmeral adj. rare = macromeric adj.

ΚΠ

1877 T. H. Huxley Man. Anat. Invertebrated Animals viii. 484 The macromeral hemisphere next undergoes invagination.

macroˈmeric adj. rare of or relating to a macromere or macromeres.

ΚΠ

1877 T. H. Huxley Man. Anat. Invertebrated Animals viii. 499 The macromeric part of the vitellus.

This entry has been updated (OED Third Edition, March 2000; most recently modified version published online March 2022).

单词	macromere
释义	macromeren. Brit. /ˈmakrə(ʊ)mɪə/, U.S. /ˈmækroʊˌmɪ(ə)r/ Origin: Formed within English, by compounding. Etymons: macro- comb. form, -mere comb. form. Etymology: < macro- comb. form + -mere comb. form. Compare micromere n. Compare French macromère (1905; 1873 in Larousse in different senses). Embryology. A relatively large blastomere, formed by unequal division in the fertilized ovum, and usually appearing at the vegetal pole. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > [noun] > blastula periblastula1876 macromere1877 micromere1877 blastula1887 amphiblastula1888 1877 T. H. Huxley Man. Anat. Invertebrated Animals viii. 483 Those [blastomeres] which proceed from the macromere long remain larger and more granular than those which proceed from the micromere. 1909 J. W. Jenkinson Exper. Embryol. 213 Eight instead of the usual four macromeres were found in the Trocophore larva. 1969 R. F. Chapman Insects xviii. 349 In Hypogastrura cleavage is unequal with the formation of micro- and macromeres. 1984 L. W. Browder Developmental Biol. (ed. 2) x. 444 This [unequal division] produces four small cells, the micromeres, clustered at the vegetal pole and four large cells, the macromeres. Derivatives macroˈmeral adj. rare = macromeric adj. ΚΠ 1877 T. H. Huxley Man. Anat. Invertebrated Animals viii. 484 The macromeral hemisphere next undergoes invagination. macroˈmeric adj. rare of or relating to a macromere or macromeres. ΚΠ 1877 T. H. Huxley Man. Anat. Invertebrated Animals viii. 499 The macromeric part of the vitellus. This entry has been updated (OED Third Edition, March 2000; most recently modified version published online March 2022). < n.1877
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