Medullary-ray definition

(anat.) Extensions of the kidney tubules into the cortical substance.
noun
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(bot.) Strands of parenchymal tissue extending from the pith to the bark and separating the vascular bundles in the stems of certain plants (dicotyledons and gymnosperms)
noun
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Other Word Forms

Noun

Singular:
medullary-ray
Plural:
medullary rays