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medullary a. 骨髓的,髓質的,延髓的 骨髓的,髓質的,延髓的 medullary adj 1: containing or consisting of or resembling bone marrow 2: of or relating to the medulla oblongata 3: of or relating to the medulla of any body partMedullary \ Med" ul* la* ry\, a. [ L. medullaris, fr. medulla marrow: cf. F. m[' e] dullaire.] 1. ( Anat.) ( a) Pertaining to, consisting of, or resembling, marrow or medulla. ( b) Pertaining to the medula oblongata. [ 1913 Webster] 2. ( Bot.) Filled with spongy pith; pithy. [ 1913 Webster] { Medullary groove} ( Anat.), 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} ( Bot.), the rays of cellular tissue seen in a transverse section of exogenous wood, which pass from the pith to the bark. { Medullary sheath} ( Anat.), the layer of white semifluid substance ( myelin), between the primitive sheath and axis cylinder of a medullated nerve fiber. [ 1913 Webster]
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