medullated

adjective

med·​ul·​lat·​ed ˈme-də-ˌlā-təd How to pronounce medullated (audio)
ˈme-jə-
1
of a nerve fiber : myelinated
2
of a hair or wool fiber : having a hollow space within the cortex (see cortex sense 1a(2))

Word History

First Known Use

1867, in the meaning defined at sense 1

Time Traveler
The first known use of medullated was in 1867

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Cite this Entry

“Medullated.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/medullated. Accessed 4 Feb. 2026.

Medical Definition

medullated

adjective
med·​ul·​lat·​ed ˈmed-ᵊl-ˌāt-əd How to pronounce medullated (audio) ˈmej-ə-ˌlāt- How to pronounce medullated (audio)
1
2
: having a medulla
used of fibers other than nerve fibers
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