po·​lio·​en·​ceph·​alo·​my·​eli·​tis -in-ˌsef-ə-lō-ˌmī-ə-ˈlīt-əs How to pronounce polioencephalomyelitis (audio)
plural polioencephalomyelitides -ˈlit-ə-ˌdēz How to pronounce polioencephalomyelitis (audio)
: inflammation of the gray matter of the brain and the spinal cord

Dictionary Entries Near polioencephalomyelitis

Cite this Entry

“Polioencephalomyelitis.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/polioencephalomyelitis. Accessed 31 Mar. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Challenging Standardized Test Words, Vol. 2

  • a pencil broken in half on top of a test answer sheet
  • The business’s new computer system proved not to be a panacea.
Spell It

Hear a word and type it out. How many can you get right?

Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?