add

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To combine (a column of figures, for example) to form a sum.
2. v. To join or unite so as to increase in size, quantity, quality, or scope: added 12 inches to the deck; flowers that added beauty to the dinner table.
3. v. To say or write further.
4. v. To find a sum in arithmetic.
5. v. To constitute an addition: an exploit that will add to her reputation.
6. v. To create or make an addition: gradually added to my meager savings.
7. add up To be reasonable, plausible, or consistent; make sense: The witness's testimony simply did not add up.
8. add up To amount to an expected total: a bill that didn't add up.
9. add up To formulate an opinion of: added up the other competitors in one glance.
10. idiom. add up to To constitute; amount to: The revisions added up to a lot of work.

Century Dictionary and Cyclopedia

1. To join or unite into one sum or aggregate. Specifically, in mathematics, to find the measure of the sum of two or more quantities, or a combination of them into which each enters with its full effect and independently of the others, so that an increase of any one of the added quantities produces an equal increase of the sum: used with together or up: as, to add numbers together; to add or add up a column of figures.
2. To unite, join, attach, annex, or subjoin as an augmentation or accretion; bring into corporate union or relation: with to before the subject of addition, and sometimes without an expressed object when this is implied by the subject: as, add another stone, or another stone to the pile; he continually added
3. to his store; to add to one's grief.
4. To put into the possession of; give or grant additionally, as to a person.
5. To be or serve as an addition; be added: with to: as, the consciousness of folly often adds to one's regret.
6. To perform the arithmetical operation of addition.

Wiktionary

1. v. transitive To join or unite, as one thing to another, or as several particulars, so as to increase the number, augment the quantity, or enlarge the magnitude, or so as to form into one aggregate. Hence: To sum up; to put together mentally.
2. v. transitive To combine elements of (something) into one quantity.
3. v. transitive To give by way of increased possession (to any one); to bestow (on).
4. v. transitive To append, as a statement; to say further.
5. v. intransitive To make an addition. To add to, to augment; to increase.
6. v. intransitive, mathematics To perform the arithmetical operation of addition.
7. n. video games An additional enemy that joined the fight after the primary target.
8. n. computer science An act or instance of adding.

GNU Webster's 1913

1. v. To give by way of increased possession (to any one); to bestow (on).
2. v. To join or unite, as one thing to another, or as several particulars, so as to increase the number, augment the quantity, enlarge the magnitude, or so as to form into one aggregate. Hence: To sum up; to put together mentally
3. v. To append, as a statement; to say further.
4. v. To make an addition. To add to, to augment; to increase.
5. v. To perform the arithmetical operation of addition.

WordNet 3.0

1. v. bestow a quality on
2. v. make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope of
3. v. make an addition by combining numbers
4. v. determine the sum of
5. v. constitute an addition
6. n. a condition (mostly in boys) characterized by behavioral and learning disorders
7. v. state or say further