Medullary
Medullary , adjective
[Latin medullaris, from medulla marrow: compare French médullaire.]
1.
(a) (Anatomy) Pertaining to, consisting of, or resembling, marrow or medulla.
(b)
(Anatomy) Pertaining to the medula oblongata.
2.
(Botany) Filled with spongy pith; pithy.
Collocations (3)
Medullary groove (Anatomy) , 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 (Botany) , the rays of cellular tissue seen in a transverse section of exogenous wood, which pass from the pith to the bark.
Medullary sheath (Anatomy) , the layer of white semifluid substance (myelin), between the primitive sheath and axis cylinder of a medullated nerve fiber.