Meanings
nounmedullary sheath (plural medullary sheaths)
plural medullary sheaths
- biologyA thin layer surrounding the pith.
Synonyms & antonyms
nouna layer of myelin encasing (and insulating) the axons of medullated nerve fibers
Similar
Also see
Synonym sets from Open English WordNet, CC BY 4.0.
Cite this entry
APA
medullary sheath. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/medullary%20sheath
MLA
“medullary sheath.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/medullary%20sheath. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “medullary sheath,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/medullary%20sheath.
Source: medullary sheath on Wiktionary, CC BY-SA 4.0.