| 单词 | pith ray |
| 释义 | > as lemmaspith ray pith ray n. = medullary ray n. at medullary adj. Compounds. 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 c1868 S. W. Johnson How Crops Grow iii. 276 The botanist terms them pith-rays or medullary rays. 1953 K. Esau Plant Anat. xv. 343 The spaces among the strands..are occupied by parenchymatic ground tissue. These plates of tissue can be designated as pith rays or medullary rays. 1988 Bot. Gaz. 149 121/1 In cross section, the tracheids are all radically aligned..and the pith rays are continuous with pith parenchyma. < as lemmas |
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