Addendum vs. Addenda: What's the Difference?

Table of Contents
  • Addendum

    An addendum, in general, is an addition required to be made to a document by its author subsequent to its printing or publication. It comes from the Latin verbal phrase addendum est, being the gerundive form of the verb addo, addere, addidi, additum, “to give to, add to”, meaning “(that which) must be added”. Addenda is from the plural form addenda sunt, “(those things) which must be added”. (See also memorandum, agenda, corrigenda.)

  • Addenda

    An addendum, in general, is an addition required to be made to a document by its author subsequent to its printing or publication. It comes from the Latin verbal phrase addendum est, being the gerundive form of the verb addo, addere, addidi, additum, “to give to, add to”, meaning “(that which) must be added”. Addenda is from the plural form addenda sunt, “(those things) which must be added”. (See also memorandum, agenda, corrigenda.)

Wikipedia
  • Addendum (noun)

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

  • Addendum (noun)

    A postscript.

  • Addendum (noun)

    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.

  • Addenda (noun)

    plural of addendum

Wiktionary
  • Addendum (noun)

    an item of additional material added at the end of a book or other publication.

  • Addendum (noun)

    the radial distance from the pitch circle of a cogwheel or wormwheel to the crests of the teeth or ridges.

Oxford Dictionary

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