| 单词 | xylem |
| 释义 | xylem /zuy"leuhm, -lem/, n. Bot. a compound tissue in vascular plants that helps provide support and that conducts water and nutrients upward from the roots, consisting of tracheids, vessels, parenchyma cells, and woody fibers. [1870-75; < G, equiv. to Gk xýl(on) wood + -ema (see PHLOEM)] |
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