indusiumn.
/ɪnˈdjuːzɪəm/, /ɪnˈdʒuːzɪəm/, U.S. /ᵻnˈd(j)uʒ(i)əm/, /ᵻnˈd(j)uziəm/ 1. Anatomy.
a. The amnion of the fœtus.
ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > membranes, etc., of embryo or fetus > [noun] > membranes enclosing
houve1530
kell1530
cotyledon1540
chorion1545
coif1545
hoop-caul1545
shirt1545
caul1547
sillyhow1574
biggin1611
guard1611
allantoides1615
allantois1615
allantoid1633
amnios1657
amnion1667
heam1681
vitta1693
indusium1706
silly-hood1836
1706 in Phillips's New World of Words (new ed.)
1855 F. H. Ramsbotham Princ. & Pract. Obstetr. Med. (new Amer. ed.) 43 Besides the peritoneal coat,—indusium—they possess beneath it another,—their proper tunic.
b. Also induseum. The thin layer of grey matter covering the upper surface of the corpus callosum. In full indusium (or induseum) griseum.
ΘΚΠ
the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [noun] > cortex > layers of grey matter
substantia nigra1809
fasciola1826
claustrum1848
putamen1877
striatum1889
indusium1890
1890 J. S. Billings National Med. Dict. I. 693/2 Indusium griseum.
1908 Quain's Elements Anat. (ed. 11) III. i. 401 The lateral striæ are similar, but their corresponding grey matter is even more rudimentary than the indusium.
1948 A. Brodal Neurol. Anat. x. 330 Smaller contingents [of fibres] appear to reach it from the induseum griseum.
1963 W. Zeman & J. R. M. Innes Craigie's Neuroanat. Rat (ed. 2) vii. 147 The rest [of the hippocampal formation] curves around it and becomes continuous with the indusium.
1966 R. Hassler & H. Stephan Evol. of Forebrain 104 The supracallosal gyrus (or induseum griseum).
2. Botany.
a. The membranous shield or scale covering the sorus or fruit-cluster of a fern.
ΘΚΠ
the world > plants > particular plants > ferns > [noun] > parts of
crooka1398
brake-root1626
indusium1807
membranula1821
sorus1832
foot1862
crosier1874
fruit-dot1880
fiddle-head1882
saddle1882
fern-cup1888
stomium1905
annulus-
1807 J. E. Smith Introd. Physiol. & Systematical Bot. 248 My learned friends Willdenow and Swartz have judged otherwise, calling this membrane the indusium, or covering; which seems to me altogether superfluous.
1851 T. Moore Brit. Ferns (1864) 12 The indusium..is mostly a thin transparent membranous scale of the same general form as the sorus itself.
1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 356 The whole sorus is very generally covered by an excrescence of the epidermis, the true Indusium: in other cases the false indusium consists of an outgrowth of the tissue of the leaf itself.
b. A collection of hairs united into a sort of cup, and enclosing the stigma in the Goodeniaceæ.
ΘΚΠ
the world > plants > particular plants > plants and herbs > according to family > Goodeniaceae > [noun] > part of plant
indusium1830
1830 J. Lindley Introd. Nat. Syst. Bot. 186 Campanulas have not the fringed indusium which terminates the style of Goodeniaceæ, and surrounds their stigma.
3. Entomology. The case or covering of a larva.
ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Insecta > eggs or young > [noun] > young or development of young > larva > parts of > covering
indusium1832
shuck1886
1832 C. Lyell Princ. Geol. (ed. 2) II. 246 The Indusia, or cases of the larvæ of Phryganea.
1859 D. Page Handbk. Geol. Terms 211 The indusium or case of the caddis-worm.
This entry has not yet been fully updated (first published 1900; most recently modified version published online March 2022).
<
n.1706