medullation

[ med-l-ey-shuhn, mej-uh-ley- ]
/ ˌmɛd lˈeɪ ʃən, ˌmɛdʒ əˈleɪ- /

noun Biology.

the formation of a medullary sheath about a nerve fiber.

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Origin of medullation

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020