medullary

In anatomy and zoology, pertaining to marrow or medulla, or resembling it in form or position; myelonal: as, medullary substance; a medullary cavity; medullary cancer; a medullary foramen.

In botany, composing or pertaining to the medulla or pith of plants. See phrases below.

The hollow of a bone which contains marrow.

Pertaining to, consisting of, or resembling, marrow or medulla.

Pertaining to the medula oblongata.

Filled with spongy pith; pithy.

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.

the rays of cellular tissue seen in a transverse section of exogenous wood, which pass from the pith to the bark.

the layer of white semifluid substance (myelin), between the primitive sheath and axis cylinder of a medullated nerve fiber.