WordNet (r) 3.0 (2006):
add together v 1: determine the sum of; "Add all the people in this town to those of the neighboring town" [syn: total, tot, tot up, sum, sum up, summate, tote up, add, add together, tally, add up] 2: make an addition by combining numbers; "Add 27 and 49, please!" [syn: add, add together] [ant: deduct, subtract, take off]