Scrabble Dictionary

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Addendum

əˈdɛndəm

Addendum definitions

noun

Inflections:

addenda addendums addendum

an item of additional material added at the end of a book or document, typically in order to correct, clarify, or supplement something

"the group has issued an addendum to the letter"

Synonyms:
appendix codicil postscript afterword tailpiece rider coda supplement accompaniment
the radial distance from the pitch circle of a cogwheel or wormwheel to the crests of the teeth or ridges