Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “myelin”

myelin

noun [U] uk   /ˈmaɪə.lɪn/ specialized us  
a substance containing a lot of fat that forms a covering around nerves, especially those in the brain, protecting them and helping them to send signals effectively: The myelin sheath around the neuron is damaged.Substances and structures in the body
(Definition of myelin from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of myelin?
Add Cambridge dictionaries to your browser to your website

More meanings of “myelin”

Translations of “myelin”

Word of the Day

roost

When birds roost, they go somewhere to rest or sleep.

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More