Longman Dictionary of Contemporary English homepage

Date: 1600-1700
Language: Latin
Origin: addere; ADD

addendum

 noun
     
ad‧den‧dum plural addenda or addendums [countable]
something you add to the end of a speech or book to change it or give more information
addendum to
an addendum to section 4
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
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