英语词汇“secondary ray”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

a. (More fully primary ray) an interfascicular sheet of parenchymal tissue connecting the pith and primary cortex in a stem or root (also called medullary ray); (more fully secondary ray) in the secondary vascular tissue of a plant, a radial strip of parenchyma cells, and in some conifers, tracheids, having storage and conductive functions. Frequently attributive (see Compounds 2a).

ΘΚΠ

the world > plants > part of plant > cell or aggregate tissue > [noun] > tissue > pith or soft internal tissue > medullary ray(s)

insertment1671

ray1675

medullary ray1816

pith rayc1868

1673 N. Grew Idea Phytol. Hist. ii. iii. 67 These parts are like so many white Rays streaming, by the diameter of the Root, from the inward edge toward the circumference of the Bark.]

1675 N. Grew Compar. Anat. Trunks i. iii. 20 The Parenchymous part of the Wood..hath this property, to be disposed into many Diametral rays, or Insertions, running betwixt so many portions of Vessels, from the Bark to the Pith.

1702 R. Neve Apopiroscopy ii. 99 The Trunks of all Trees whatsoever, hath this property, to be dispos'd into many Diametrical-Rays, plainly visible upon cutting a Tree athwart.

1797 J. Walker Elem. Geogr., & Nat. & Civil Hist. (ed. 3) vii. 129 The rays of wood, in which the holes are the air vessels.

1832 G. Sinclair Useful & Ornamental Planting ii. 7 These [lines].., termed primary or secondary rays, continued in one straight line from the pith to the bark, or interrupted or broken in the course of their direction, according to the species of tree.

1882 S. H. Vines tr. J. von Sachs Text-bk. Bot. (ed. 2) i. ii. 131 Each of these dark lines in the figure represents a ray of parenchymatous cells placed horizontally; each of the rays runs..uninterruptedly from the xylem through the cambium into the secondary phloëm.

1925 A. J. Eames & L. H. MacDaniels Introd. Plant Anat. vii. 176 The ray is more or less like a brick wall, the individual cells representing the bricks.

1953 K. Esau Plant Anat. xi. 252 The dicotyledons typically contain only parenchyma cells in the rays.

1992 M. Ingrouille Diversity & Evol. Land Plants 194 They arise from cells of the interfascicular region or from the procambium (primary rays) or from groups of ray initials in the cambium (secondary rays).

单词	secondary ray
释义	> as lemmas secondary ray a. (More fully primary ray) an interfascicular sheet of parenchymal tissue connecting the pith and primary cortex in a stem or root (also called medullary ray); (more fully secondary ray) in the secondary vascular tissue of a plant, a radial strip of parenchyma cells, and in some conifers, tracheids, having storage and conductive functions. Frequently attributive (see Compounds 2a). ΘΚΠ the world > plants > part of plant > cell or aggregate tissue > [noun] > tissue > pith or soft internal tissue > medullary ray(s) insertment1671 ray1675 medullary ray1816 pith rayc1868 1673 N. Grew Idea Phytol. Hist. ii. iii. 67 These parts are like so many white Rays streaming, by the diameter of the Root, from the inward edge toward the circumference of the Bark.] 1675 N. Grew Compar. Anat. Trunks i. iii. 20 The Parenchymous part of the Wood..hath this property, to be disposed into many Diametral rays, or Insertions, running betwixt so many portions of Vessels, from the Bark to the Pith. 1702 R. Neve Apopiroscopy ii. 99 The Trunks of all Trees whatsoever, hath this property, to be dispos'd into many Diametrical-Rays, plainly visible upon cutting a Tree athwart. 1797 J. Walker Elem. Geogr., & Nat. & Civil Hist. (ed. 3) vii. 129 The rays of wood, in which the holes are the air vessels. 1832 G. Sinclair Useful & Ornamental Planting ii. 7 These [lines].., termed primary or secondary rays, continued in one straight line from the pith to the bark, or interrupted or broken in the course of their direction, according to the species of tree. 1882 S. H. Vines tr. J. von Sachs Text-bk. Bot. (ed. 2) i. ii. 131 Each of these dark lines in the figure represents a ray of parenchymatous cells placed horizontally; each of the rays runs..uninterruptedly from the xylem through the cambium into the secondary phloëm. 1925 A. J. Eames & L. H. MacDaniels Introd. Plant Anat. vii. 176 The ray is more or less like a brick wall, the individual cells representing the bricks. 1953 K. Esau Plant Anat. xi. 252 The dicotyledons typically contain only parenchyma cells in the rays. 1992 M. Ingrouille Diversity & Evol. Land Plants 194 They arise from cells of the interfascicular region or from the procambium (primary rays) or from groups of ray initials in the cambium (secondary rays). extracted from rayn.⁵ < as lemmas
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> as lemmas