Addendum vs. Addenda

Addendumnoun

Something to be added; especially text added as an appendix or supplement to a document.

Addendumnoun

A postscript.

Addendumnoun

(engineering) The height by which the tooth of a gear projects beyond (outside for external, or inside for internal) the standard pitch circle or pitch line.

Addendumnoun

A thing to be added; an appendix or addition.

Addendumnoun

textual matter that is added onto a publication; usually at the end

Addendumnoun

an item of additional material added at the end of a book or other publication.

Addendumnoun

the radial distance from the pitch circle of a cogwheel or wormwheel to the crests of the teeth or ridges.

Addendum

An addendum or appendix, in general, is an addition required to be made to a document by its author subsequent to its printing or publication. It comes from the Latin gerundive addendum, plural addenda, from addere (lit. ''give toward'', compare with memorandum, agenda, corrigenda).

Addendanoun

plural of addendum