The definition of an erratum is a mistake found in something already printed.
(noun)An example of an erratum is a typo found in a published book.
See erratum in Webster's New World College Dictionary
noun pl. errata
Origin: L, neut. of erratus < pp. of errare: see err
See erratum in American Heritage Dictionary 4
noun pl. er·ra·ta (-tə)
Origin:
Origin: Latin errātum
Origin: , from
Origin: neuter past participle of errāre, to stray; see ers- in Indo-European roots
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