medullated
/mɛˈdʌleɪtɪd/ /mɪˈdʌleɪtɪd/adjective
1 Histology and Physiology. Of a nerve or nerve fibre: myelinated.
2 Botany. Especially of a plant stem or stele: having a distinct medulla or pith.
3Of a hair: having a medulla.
Origin
Mid 19th century. From medulla + -ated. Compare post-classical Latin medullatus full of marrow, rich, fat (Vulgate).