add

verb9

1. •
   to put something in or with something else as an extra part
2. •
   To sum up; to put together mentally; to add up.

   • to add numbers
3. •
   To combine elements of (something) into one quantity.

   • to add a column of numbers
4. •
   To perform the arithmetical operation of addition.

   • He adds rapidly.
5. •
   To append (e.g. a statement); to say further information.

   • He added that he would willingly consent to the entire abolition of the tax — 1849
6. •
   To intensify; to augment; to increase.

   • It adds to our anxiety.
7. •
   (Internet) To add someone as a friend.
8. •
   To summon minions or reinforcements.

   • Typically, a hostile mob will add whenever it's within the aggro radius of a player.
9. •
   To give by way of increased possession (to someone); to bestow (on).

   • The Lord shall add to me another son. — 1611

noun3

1. •
   The addition of a song to a station's playlist.

   • In a typical week, 10 to 15 songs may be up for consideration as “adds” of new songs for the station's playlist. — 2006
2. •
   An act or instance of adding.

   • List the number of adds and multiplies for each of the forms (6) , (7), and (8). — 2004
3. •
   An additional enemy that joins a fight after the primary target.

   • When the player has fought the boss for one minute, two adds will arrive from the back and must be dealt with.

noun2

1. •
   Abbreviation of address.

   • Send me your no. or add. — 1984
2. •
   Abbreviation of addendum.

noun3

1. •
   A designation on prerecorded compact discs indicating that the contents were recorded in analog but mixed and mastered in digital.
2. •
   Initialism of attention deficit disorder.
3. •
   Initialism of accidental death and dismemberment.

   • Although not sought by QuesTech, the dismemberment portion of the policy was nonetheless issued as an integral part of Hartford’s standard ADD policy. — 1989