Meaning of ADD in English

ADD

I. ˈad, ˈaa(ə)d verb

( -ed/-ing/-s )

Etymology: Middle English adden, from Latin addere, from ad- + -dere to put — more at do

transitive verb

1.

a. : to join, annex, or unite (as one thing to another) so as to bring about an increase (as in number, size, or importance) or so as to form one aggregate

added music to the list of his interests

adds form to substance and achieves artistic unity

adding a wing to the house

b. : to put together mentally : unite or form a single whole in the mind

add together the ideas of two days — John Locke

2. : to say or write further : go on to say or write

that, he added, was a mistake

3. obsolete : give , bestow

all these things shall be added unto you — Mt 6:33 (Authorized Version)

4. : to combine (two or more numbers or quantities or a group or column of numbers or quantities) into one sum : find the total sum of by combining

5. : to join or unite (another thing) to itself

a chemical compound that adds chlorine

6. : to include (a person) as a member of a group or party : count

don't forget to add me in

intransitive verb

1.

a. : to perform the mathematical operation of addition

b. : to come together or unite in or as if in the mathematical process of addition

the facts … added together to build up a theory which was indisputable — Harvey Graham

2. : to be or serve as an addition : increase , augment

the novel added to his reputation

: make an addition : enlarge

they added to the house the next year

— used with to

II. noun

( -s )

: copy to be added to a news story

a new add on the hurricane story

III. abbreviation

1. addendum

2. addition

3. address

IV. noun

: an instance of addition

the computer does an add in 7 microseconds

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.