The noun add has 1 sense (no senses from tagged texts)
1. attention deficit disorder, ADD, attention deficit hyperactivity disorder, ADHD, hyperkinetic syndrome, minimal brain dysfunction, minimal brain damage, MBD -- (a condition (mostly in boys) characterized by behavioral and learning disorders)
Overview of verb add
The verb add has 6 senses (first 5 from tagged texts)
1. (395) add -- (make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope of; "We added two students to that dorm room"; "She added a personal note to her letter"; "Add insult to injury"; "Add some extra plates to the dinner table")
2. (328) add, append, supply -- (state or say further; "`It doesn't matter,' he supplied")
3. (68) lend, impart, bestow, contribute, add, bring -- (bestow a quality on; "Her presence lends a certain cachet to the company"; "The music added a lot to the play"; "She brings a special atmosphere to our meetings"; "This adds a light note to the program")
4. (13) add, add together -- (make an addition by combining numbers; "Add 27 and 49, please!")
5. (8) total, tot, tot up, sum, sum up, summate, tote up, add, add together, tally, add up -- (determine the sum of; "Add all the people in this town to those of the neighboring town")
6. add -- (constitute an addition; "This paper will add to her reputation")