01 a. Pertaining to, consisting of, or resembling, marrow or medulla.
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1.
Pertaining to, consisting of, or resembling, marrow or medulla.(Anat.)
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2.
Filled with spongy pith; pithy.(Bot.)
Phrases & compounds
Medullary groove —
a groove, in the epiblast of the vertebrate blastoderm, the edges of which unite, making a tube (the medullary canal) from which the brain and spinal cord are developed.
Medullary rays —
the rays of cellular tissue seen in a transverse section of exogenous wood, which pass from the pith to the bark.
Medullary sheath —
the layer of white semifluid substance (myelin), between the primitive sheath and axis cylinder of a medullated nerve fiber.