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medullary ray
noun
, Botany.
- (in the stems of woody plants) one of the vertical bands or plates of unspecialized tissue that radiate between the pith and the bark.
medullary ray
noun
- any of the sheets of conducting tissue that run radially through the vascular tissue of some higher plants
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Word History and Origins
Origin of medullary ray1
First recorded in 1820–30
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