Main Entry: cor·ri·gen·dum
Pronunciation: “kor-&-'jen-d&m, “kär-
Function: noun
Inflected Form(s): plural cor·ri·gen·da /-d&/
Etymology: Latin, neuter of corrigendus, gerundive of corrigere to correct: an error in a printed work discovered after printing and shown with its correction on a separate sheet

From Mirriam-Webster's Online Dictionary.

Corrigenda are only available for August 1997 to December 2009 (the note below is incorrect). Corrigenda for current and recent issues are available at:

http://engima.puzzlers.org

Corrigenda / Errata