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单词 hilum
释义

hilumn.

Brit. /ˈhʌɪləm/, U.S. /ˈhaɪləm/
Etymology: Latin hīlum little thing, trifle; according to Festus, thought to have originally meant ‘that which adheres to a bean’; hence in modern Botanical use (see 2).
1. Something very minute. Obsolete.
ΘΚΠ
the world > space > extension in space > measurable spatial extent > smallness > [noun] > that which is small > a small thing > extremely small thing
hilum1659
whatkin1674
scuddick1823
infinitesimal1840
teensy-weensy1872
1659 D. Pell Πελαγος 44 Unhewn Sailors, that have no more than a meer hilum of goodness in them.
2.
a. Botany. The point of attachment of a seed to its seed-vessel; the scar on the ripe seed.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > seed > [noun] > parts of > hilum or cicatrix
hilum1753
cicatrix1826
cicatricula1828
caruncle1830
omphalodium1832
strophiole1839
omphalode1850
nucleus1861
wound stump1923
1753 Chambers's Cycl. Suppl. Hilum, a word used by botanists to express the blackish spot in beans, commonly called by us the eye of the bean.
1830 J. Lindley Introd. Nat. Syst. Bot. 115 Seeds..with a smooth shining coat, and a broad pale hilum.
1880 A. Gray Struct. Bot. vi. §8. 277 In the simplest form of ovule, hilum and chalaza are one.
b. A similar mark on a starch-granule.
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1867 J. Hogg Microscope (ed. 6) ii. i. 341 Most of the granules [of starch] have a circular spot, termed the hilum, around which a large number of curved lines arrange themselves.
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c. ‘The aperture in the extine of a pollen grain’ ( New Sydenham Soc. Lexicon).
3.
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a. Anatomy. = hilus n. ‘Applied also to certain small apertures and depressions’ ( New Sydenham Soc. Lexicon).
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b. Pathology. ‘A term for a small flattened staphyloma of the iris from corneal perforation, in consequence of its likeness to the hilum of the garden bean’ ( New Sydenham Soc. Lexicon).
c. A little opening in the statoblast of a sponge.
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [noun] > member of > parts of > aperture in statoblast
hilum1887
1887 W. J. Sollas in Encycl. Brit. XXII. 424 [article Sponges] On one side of the capsule is a hilum which leads into the interior.
This entry has not yet been fully updated (first published 1898; most recently modified version published online March 2022).
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n.1659
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