adding
ad-ding
verb
The present participle of 'add', meaning to join or include.
"He is adding a new wing to the house."
noun
The action or process of performing mathematical addition.
"Quick adding of figures is essential."
Thesaurus
Synonyms: add, bring, impart, lend, contribute, bestow, hyperkinetic syndrome, attention deficit disorder, minimal brain damage, ADHD, MBD, minimal brain dysfunction