Definitions
1.NounThe act of adding anything."The addition of five more items to the agenda will make the meeting unbearably long."
2.NounAnything that is added.
3.NounThe arithmetic operation of adding.
4.NounA dot at the right side of a note as an indication that its sound is to be lengthened one half.
5.NounA title annexed to a person's name to identify him or her more precisely.
6.NounSomething added to a coat of arms, as a mark of honour.
7.Nounan organic reaction where two or more molecules combine to form a larger one (the adduct).