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.
Also called pith ray.

Origin of medullary ray

First recorded in 1820–30

Words nearby medullary ray

medullary cone, medullary groove, medullary membrane, medullary plate, medullary pyramid, medullary ray, medullary sheath, medullary space, medullary sponge kidney, medullary stria of fourth ventricle, medullary stria of thalamus

British Dictionary definitions for medullary ray

medullary ray

noun

any of the sheets of conducting tissue that run radially through the vascular tissue of some higher plants

Medical definitions for medullary ray

medullary ray

n.

The center of the renal, cortical lobule, consisting of the ascending or descending limbs of the nephronic loop or of the collecting tubules. Ferrein's pyramid