The definition of an erratum is a mistake found in something already printed.
An example of an erratum is a typo found in a published book.
an error discovered in a work already printed
Origin of erratumL, neuter of erratus ; from past participle of errare: see err
An error in printing or writing, especially such an error noted in a list of corrections and bound into a book.
Origin of erratumLatin erratum, from neuter past participle of errare, to stray; see ers- in Indo-European roots.
- An error, especially one in a printed work.