xylemn.
/ˈzʌɪləm/, /ˈzʌɪlɛm/, U.S. /ˈzaɪləm/, /ˈzaɪˌlɛm/ Botany.
Collective term for the cells, vessels, and fibres forming the harder portion of the fibrovascular tissue; the wood, as a tissue of the plant-body. Also attributive.
ΘΚΠ
the world > plants > part of plant > cell or aggregate tissue > [noun] > tissue > xylem or phloem
liber1753
phloem1872
xylem1875
protophloem1884
protoxylem1887
internal phloem1891
metaxylem1894
hadrome1898
leptome1898
metaphloem1900
included phloem1910
1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 94 The different forms of tissue of a differentiated fibro-vascular bundle may be classified into two groups, which Nägeli calls the Phloëm- (Bast) and Xylem- (Wood) portion of the bundle... The xylem-portion of the fibro-vascular bundle has mostly a strong tendency to thicken its cell-forms.
1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 95 These horizontal elements..may be..designated as rays; within the xylem they are called xylem-rays, within the phloëm, phloëm-rays.
1894 D. H. Scott Struct. Bot. i. Flowering Pl. 56 The woody character of the cell-walls of the xylem is due to the presence of a substance called lignine.
This entry has not yet been fully updated (first published 1921; most recently modified version published online December 2021).
<
n.1875