tracheidn.

/ˈtreɪkiːɪd/

/trəˈkiːɪd/

Forms: Also tracheide.

Etymology: < German tracheïde, introduced 1863 by Sanio Bot. Zeitung 113 ‘cellulae sive fibrae ligneae tracheïdeae, kurzweg Tracheïdzellen oder Tracheïden’: < trachea n. + -ide , -id suffix².

Botany.

A vascular cell, with pitted lignified wall, which serves for the conduction of water; a vascular wood-cell. The wood of the vascular tissue of Gymnosperms and Vascular Cryptogams consists wholly of tracheids.

ΘΚΠ

the world > plants > part of plant > cell or aggregate tissue > [noun] > tissue > vessel(s) > wood-vesselor -cell

trachea1744

wood-vessel1796

tracheid1875

fibre-tracheid1898

tracheome1900

1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 98 To the Vascular forms belong the ducts and the vascular wood-cells or Tracheïdes.

1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 99 Vessels with prosenchymatous constituents now form the immediate passage to the vascular wood-cells (Tracheïdes).

1885 G. L. Goodale in A. Gray & G. L. Goodale Bot. Text-bk. (ed. 6) II. i. ii. 82 Cells..which are closed throughout..are known as Tracheïds.

1895 F. W. Oliver et al. tr. A. Kerner von Marilaun Nat. Hist. Plants I. 276 The walls of the wood-vessels exhibit similar thickenings to those of the wood-cells or tracheides.

1907 D. P. Penhallow Man. N. Amer. Gymnosperms vi. 88 Such tracheids are invariable features of the ray in all the higher Coniferæ.

1910 J. M. Coulter et al. Textbk. Bot. I. iv. 241 Tracheids are single cells thus formed.

1948 New Biol. 4 89 Another seasoning defect known as ‘collapse’ is apt to appear in large-pored hardwoods and in softwoods having thin walled tracheids if premature drying is permitted; the fragile elements actually cave in.

1974 Sci. Amer. Apr. 59/1 Tracheids predominate in softwoods, which have no vessel cells or libriform fiber cells.

Derivatives

tracheidal adj.

/treɪkɪˈaɪd(ə)l/

/trəˈkiːɪd(ə)l/ pertaining to or of the nature of a tracheid.

ΚΠ

1891 in Cent. Dict.

This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2020).

单词	tracheid
释义	tracheidn. /ˈtreɪkiːɪd//trəˈkiːɪd/ Forms: Also tracheide. Etymology: < German tracheïde, introduced 1863 by Sanio Bot. Zeitung 113 ‘cellulae sive fibrae ligneae tracheïdeae, kurzweg Tracheïdzellen oder Tracheïden’: < trachea n. + -ide , -id suffix². Botany. A vascular cell, with pitted lignified wall, which serves for the conduction of water; a vascular wood-cell. The wood of the vascular tissue of Gymnosperms and Vascular Cryptogams consists wholly of tracheids. ΘΚΠ the world > plants > part of plant > cell or aggregate tissue > [noun] > tissue > vessel(s) > wood-vesselor -cell trachea1744 wood-vessel1796 tracheid1875 fibre-tracheid1898 tracheome1900 1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 98 To the Vascular forms belong the ducts and the vascular wood-cells or Tracheïdes. 1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 99 Vessels with prosenchymatous constituents now form the immediate passage to the vascular wood-cells (Tracheïdes). 1885 G. L. Goodale in A. Gray & G. L. Goodale Bot. Text-bk. (ed. 6) II. i. ii. 82 Cells..which are closed throughout..are known as Tracheïds. 1895 F. W. Oliver et al. tr. A. Kerner von Marilaun Nat. Hist. Plants I. 276 The walls of the wood-vessels exhibit similar thickenings to those of the wood-cells or tracheides. 1907 D. P. Penhallow Man. N. Amer. Gymnosperms vi. 88 Such tracheids are invariable features of the ray in all the higher Coniferæ. 1910 J. M. Coulter et al. Textbk. Bot. I. iv. 241 Tracheids are single cells thus formed. 1948 New Biol. 4 89 Another seasoning defect known as ‘collapse’ is apt to appear in large-pored hardwoods and in softwoods having thin walled tracheids if premature drying is permitted; the fragile elements actually cave in. 1974 Sci. Amer. Apr. 59/1 Tracheids predominate in softwoods, which have no vessel cells or libriform fiber cells. Derivatives tracheidal adj. /treɪkɪˈaɪd(ə)l//trəˈkiːɪd(ə)l/ pertaining to or of the nature of a tracheid. ΚΠ 1891 in Cent. Dict. This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2020). < n.1875
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