progamicadj.

Brit.

/prəʊˈɡamɪk/, U.S.

/proʊˈɡæmɪk/

Origin: A borrowing from Greek, combined with English elements. Etymons: pro- prefix², Greek γάμος , -ic suffix.

Etymology: < pro- prefix² + ancient Greek γάμος marriage (see -gamy comb. form) + -ic suffix (compare gamic adj.). In sense 2 probably after German progam (V. Häcker 1902, in Jenaische Zeitschrift f. Naturwissensch. 37 389). Compare earlier progamous adj.

Biology.

1. Existing or occurring prior to the formation of gametes. Now rare.In quot. 1891, designating a form of asexual reproduction in which fusion occurs between nuclei of two secondary oocytes.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [adjective] > gametes

gametic1883

gametal1888

oogamous1888

progamic1891

heterogamous1895

gametoid1903

heterogametic1910

homogametic1910

pregamic1934

planogametic1957

1891 M. Hartog in Nature 17 Sept. 484/2 Progamic paragamy: the fusing nuclei are the normal gametonuclei of the progamous cell (ovum which has formed i-polar body).

1934 Science 11 May 436/2 The single nucleus within each megalospheric gamont undergoes two progamic divisions.

2. Existing or occurring prior to fertilization; esp. of, occurring in, or designating the developmental stage in plants between pollination and fertilization.

ΚΠ

1908 Bot. Gaz. 46 148 His [sc. C. Correns's] most important conclusions are that each germ cell..carries a progamic sex tendency, but that the actual determination of sex is syngamic, that is, it results from the chance that brings together two germ cells having particular sex tendencies.

1943 Trans. Amer. Microsc. Soc. 62 101 The entire period [of conjugation in Vorticella] may be arbitrarily divided into..(1) firm attachment and entering..; (2) progamic nuclear divisions..; (3) synkaryon formation..; [etc.].

1985 Systematic Bot. 10 361/2 In Heliconia.., another Neotropical monocot genus exhibiting extensive floral differentiation, progamic (post-pollination but pre-fertilization) barriers to hybridization are well developed.

2004 Plant Cell Physiol. 45 1396/2 In maize, maturation of the egg cell was accelerated during the progamic phase, i.e. after pollination and before actual fertilization.

This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022).

单词	progamic
释义	progamicadj. Brit. /prəʊˈɡamɪk/, U.S. /proʊˈɡæmɪk/ Origin: A borrowing from Greek, combined with English elements. Etymons: pro- prefix², Greek γάμος , -ic suffix. Etymology: < pro- prefix² + ancient Greek γάμος marriage (see -gamy comb. form) + -ic suffix (compare gamic adj.). In sense 2 probably after German progam (V. Häcker 1902, in Jenaische Zeitschrift f. Naturwissensch. 37 389). Compare earlier progamous adj. Biology. 1. Existing or occurring prior to the formation of gametes. Now rare.In quot. 1891, designating a form of asexual reproduction in which fusion occurs between nuclei of two secondary oocytes. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [adjective] > gametes gametic1883 gametal1888 oogamous1888 progamic1891 heterogamous1895 gametoid1903 heterogametic1910 homogametic1910 pregamic1934 planogametic1957 1891 M. Hartog in Nature 17 Sept. 484/2 Progamic paragamy: the fusing nuclei are the normal gametonuclei of the progamous cell (ovum which has formed i-polar body). 1934 Science 11 May 436/2 The single nucleus within each megalospheric gamont undergoes two progamic divisions. 2. Existing or occurring prior to fertilization; esp. of, occurring in, or designating the developmental stage in plants between pollination and fertilization. ΚΠ 1908 Bot. Gaz. 46 148 His [sc. C. Correns's] most important conclusions are that each germ cell..carries a progamic sex tendency, but that the actual determination of sex is syngamic, that is, it results from the chance that brings together two germ cells having particular sex tendencies. 1943 Trans. Amer. Microsc. Soc. 62 101 The entire period [of conjugation in Vorticella] may be arbitrarily divided into..(1) firm attachment and entering..; (2) progamic nuclear divisions..; (3) synkaryon formation..; [etc.]. 1985 Systematic Bot. 10 361/2 In Heliconia.., another Neotropical monocot genus exhibiting extensive floral differentiation, progamic (post-pollination but pre-fertilization) barriers to hybridization are well developed. 2004 Plant Cell Physiol. 45 1396/2 In maize, maturation of the egg cell was accelerated during the progamic phase, i.e. after pollination and before actual fertilization. This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022). < adj.1891
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