What does "erratum" mean?

A published notice reporting an error belatedly discovered in a previous publication.

Erratum

Common synonyms include: amendment, blemish, clerical error, correction, corrections, corrections list.

/ɛˈɹɑtəm/ noun

noun ·Uncommon ·Advanced level

Noun

1
A published notice reporting an error belatedly discovered in a previous publication.
"When the journal's editors found out about the misreported details, they issued an erratum."
2
a mistake in printed matter resulting from mechanical failures of some kind wordnet
3
An error, especially one in a printed work.
"Erratum / The correct ISBN for this book is […]"

"When the journal's editors found out about the misreported details, they issued an erratum."

Borrowed from Latin errātum, neuter of errātus (“mistaken”).