parainfluenza virus is a noun meaning "a virus that causes upper respiratory infection (including the common cold and bronchiolitis); most often in children". It carries one recorded sense.
a virus that causes upper respiratory infection (including the common cold and bronchiolitis); most often in children
Definitions, synonyms and semantic relations for parainfluenza virus come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.