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WordReference Random House Unabridged Dictionary of American English © 2016
po•li•o  (pōlē•ō′), 
  1. Pathologypoliomyelitis.
  • shortened form 1930–35, American.

WordReference Random House Learner's Dictionary of American English © 2016
po•li•o•my•e•li•tis /ˌpoʊlioʊˌmaɪəˈlaɪtɪs/USA pronunciation  alsopo•li•o /ˈpoʊlioʊ/USA pronunciation   n. [uncountable]
  1. Pathologya disease of the nerves of the spinal cord and brain that control movement, often causing paralysis.

WordReference Random House Unabridged Dictionary of American English © 2016
po•li•o•my•e•li•tis  (pō′lē ō mī′ə lītis), 
n. [Pathol.]
  1. Pathologyan acute viral disease, usually affecting children and young adults, caused by any of three polioviruses, characterized by inflammation of the motor neurons of the brain stem and spinal cord, and resulting in a motor paralysis, followed by muscular atrophy and often permanent deformities. Also called acute anterior poliomyelitis, infantile paralysis, polio. 
Etymology:1875–80; Neo-Latin Greek polió(s) gray + Neo-Latin myelitis myelitis
po•li•o•my•e•lit•ic  (pō′lē ō mī′ə litik), 

Collins Concise English Dictionary © HarperCollins Publishers::

polio /ˈpəʊlɪəʊ/ n
  1. short for poliomyelitis

'polio' also found in these entries:

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