Legal Dictionary

addendum

Legal Definition of addendum

Noun

[pl. -da]

An attachment to a written document.

Example: Affidavits may be addendum to a petition as a petition may be an addendum to a writ.

Etymology

addere

Noun

addendum (plural addenda)

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

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