addition

noun

• The act of adding anything.

  "The addition of five more items to the agenda will make the meeting unbearably long."

• Anything that is added.
• The arithmetic operation of adding.
• A dot at the right side of a note as an indication that its sound is to be lengthened one half.
• A title annexed to a person's name to identify him or her more precisely, as in "John Doe, Esq.", "Robert Dale, Mason", "Thomas Way, of New York".
• Something added to a coat of arms, as a mark of honour; opposed to abatement.