say it: POH-lee-oh
polio is a noun meaning "an acute viral disease marked by inflammation of nerve cells of the brain stem and spinal cord". It carries one recorded sense.
an acute viral disease marked by inflammation of nerve cells of the brain stem and spinal cord
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for polio come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.