The soft inner part of something, especially the pith of a fruit. / (anatomy) The inner substance of various organs and structures, especially the marrow of bones.

plural of medulla

plural of medulla

(anatomy) The innermost region of the kidney, arranged into pyramid like structures, consisting of the collecting tubules, Henle's loop, vasa rectae, venulae rectae and the medullary capillary plexus

(neuroanatomy, anatomy) The lower portion of the brainstem.

plural of renal medulla

plural of renal medulla

(anatomy) Pertaining to, consisting of, or resembling, marrow or medulla / (anatomy) Relating to the medulla oblongata / (botany) Filled with spongy pith; pithy

(botany) any of the bands of cells in various trees extending across the wood from the pith to the bark / (anatomy) the middle part of a cortical lobule in the kidney

plural of medullary sheath