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echo check

American  
[e-koh chek] / ˈɛ koʊ ˌtʃɛk /

noun

  1. a quality check and error-control technique for data transferred over a computer network or other communications link, in which the data received is stored and also transmitted back to its point of origin, where it is compared with the original data.


Etymology

Origin of echo check

First recorded in 1945–50