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单词 spermoderm
释义

spermodermn.

/ˈspəːməʊdəm/
Etymology: < modern Latin spermoderma, -dermis (de Candolle) or French spermoderme: see spermo- comb. form and derm n.
Botany.
The combined outer and inner integuments of a seed, or the outer of these by itself.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > seed > [noun] > parts of > covering or skin
pillc1300
huskc1400
shell1561
tunicle1601
parchment1682
tunic1760
seed coat1776
aril1785
testa1796
perula1825
spermoderm1841
endopleura1842
test1846
arillode1854
tegmen1857
1841 Penny Cycl. XXI. 184/1 The external coverings of the seed..are called the testa, perisperm, or spermoderm.
1861 R. Bentley Man. Bot. i. iv. 337 Some writers..use the word testa in a general sense for the two integuments, and call the external one spermoderm.
1864 Year-bk. Med. 1863 (New Sydenham Soc.) 427 The spermoderm of the bean..is also poisonous.
This entry has not yet been fully updated (first published 1914; most recently modified version published online June 2018).
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n.1841
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