addendum
/əˈdɛn.dəm/ noun C2- Something to be added; especially text added as an appendix or supplement to a document. · An addendum was added to the contract to clarify payment terms.· The author included an addendum at the end of the book.
- A postscript.
- 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.
Plural addenda
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