echovirus

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˈɛkəʊˌvaɪrəs/US:USA pronunciation: respellingUSA pronunciation: respelling(ekō vī′rəs)


WordReference Random House Unabridged Dictionary of American English © 2026
ech•o•vi•rus  (ekō vī′rəs),USA pronunciation n., pl. -rus•es. 
  1. Microbiologyany of numerous retroviruses of the picornavirus group, some harmless and others associated with various human disorders, as aseptic meningitis.
Also, echo vi′rus, ECHO virus. 
  • 1950–55; echo- (acronym from enteric cytopathogenic human orphan) + virus; origin, originally termed "orphan'' because they were not known to be the cause of any disease

Collins Concise English Dictionary © HarperCollins Publishers::
echovirus /ˈɛkəʊˌvaɪrəs/, ECHO virus n
  1. any of a group of viruses that can cause symptoms of mild meningitis, the common cold, or infections of the intestinal and respiratory tracts
Etymology: 20th Century: from the initials of Enteric Cytopathic Human Orphan ("orphan" because originally believed to be unrelated to any disease) + virus

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