Meaning of non-medullated in English:
non-medullated
Pronunciation /ˌnɒnmɛˈdʌleɪtɪd/ /ˌnɒnmɪˈdʌleɪtɪd/
adjective
Anatomy Zoology
Not having a myelin (medullary) sheath, unmyelinated.
Origin
Mid 19th century; earliest use found in Proceedings of the Royal Society of London.