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单词 dichogamous
释义

dichogamousadj.

Brit. /dʌɪˈkɒɡəməs/, U.S. /ˌdaɪˈkɑɡəməs/
Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: dicho- comb. form, -gamous comb. form.
Etymology: < dicho- comb. form + -gamous comb. form, after German dichogam (see dichogamic adj.). Compare earlier dichogamy n., dichogamic adj.
Botany.
Of a flower or plant: exhibiting dichogamy (dichogamy n.).
ΚΠ
1849 E. Lankester tr. M. J. Schleiden Princ. Sci. Bot. 410 Hartig..sought partly in the wrong places and partly (as in the Dichogamous flowers [Ger. so bei dichogamen Blüthen]) at the wrong time.
1872 C. Darwin Origin of Species (ed. 6) iv. 78 These so-named dichogamous plants have in fact separated sexes, and must habitually be crossed.
1882 S. H. Vines tr. J. von Sachs Text-bk. Bot. (ed. 2) 906 Insects are the main agents in the conveyance of the pollen to the stigma of other flowers of dichogamous Phanerogams... Whether the Algæ named above and some Muscineæ are dichogamous is doubtful.
1959 H. L. K. Whithouse in P. R. Bell Darwin's Biol. Work v. 208 The most frequent dichogamous condition is one of protandry (the maturing of the male region before the female).
2007 Taxon 56 698/2 In Nectandra, flowers are bisexual but dichogamous; there is a distinct female and male phase separated temporally by a short dormant period.
This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022).
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adj.1849
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