vascular ray

noun

Definition of vascular ray 

: a band of usually parenchymatous cells extending from the cambium into both the xylem and phloem of a plant root or stem that conducts fluids radially and appears in a cross section like a spoke of a wheel

First Known Use of vascular ray

circa 1673, in the meaning defined above

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The first known use of vascular ray was circa 1673

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