addendum

noun
UK /əˈdɛndəm/
US /əˈdɛndəm/

Something extra added at the end of a book or paper.

The teacher put an addendum at the end of the letter with the new date.


OTHER MEANINGS

2. An extra part added to a contract or agreement.

Both sides signed the addendum to change the payment plan.

3. A small section added to the end of a report to give more information.

The report included an addendum listing all the sources.

4. Something added later to fix or complete something else.

The new rule was an addendum to the old school policy.