plural echoviruses
: any of numerous serotypes of an enterovirus (Enterovirus betacoxsackie) found in the gastrointestinal tract that cause cytopathic changes in cells in tissue culture and are sometimes associated with respiratory ailments and meningitis

Word History

Etymology

enteric cytopathogenic human orphan + virus

First Known Use

1955, in the meaning defined above

Time Traveler
The first known use of echovirus was in 1955

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Cite this Entry

“Echovirus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/echovirus. Accessed 7 Jul. 2026.

Medical Definition

: any of numerous serotypes of a picornavirus (Enterovirus betacoxsackie) that are closely related to the Coxsackieviruses, are found in the gastrointestinal tract, cause cytopathic changes in cells in tissue culture, and are sometimes associated with respiratory ailments and meningitis

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