| 单词 | vascular ray |
| 释义 | vascular ray in British Englishnoun another name for medullary ray vascular ray in American English medullary ray (sense 2) vascular ray in American Englishnoun Botany a radiate band of parenchyma in the secondary xylem extending into the secondary phloem of the stems of certain vascular plants, formed by the cambium and serving for the storage of food and the conduction of nutriments Word origin [1665–75]This word is first recorded in the period 1665–75. Other words that entered Englishat around the same time include: diffraction, group, newsletter, regulation, wader |
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