micropylaradj.
/ˌmʌɪkrə(ʊ)ˈpʌɪlə/, U.S. /ˌmaɪkroʊˈpaɪlər/ Botany and Zoology.
Of or relating to a micropyle.
ΚΠ
1854 J. H. Balfour Man. Bot. 262 A false or micropylar aril, or sometimes Arillode.
1869 W. S. Dallas tr. F. Müller Facts & Arguments for Darwin 132 The formation of the ‘micropylar apparatus’ [in Amphipoda].
1892 Amer. Naturalist 26 956 At the micropylar end of the embryo-sac the cells have a far different significance.
1925 Bot. Gaz. 80 25 Micropylar pole of ovule with pollen tube contents just emerged into embryo sac.
1952 P. Mann Systematics Flowering Plants ii. 143 Pollen grains remain within the ovary wall instead of crossing the loculus, and enter the ovule at the chalazal instead of at the micropylar end.
1998 Internat. Jrnl. Plant Sci. 159 94 Multiple pollen tubes consistently reached the micropylar region of the ovule.
This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).
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