0 to put two or more numbers or amounts together to get a total:
[ + speech ] "Oh, and thank you for all your help!" he added as he was leaving.
[ + that ] She was sad, she said, but added (= said also) that she felt she had made the right decision.
Her colleagues' laughter only added to (= increased) her embarrassment.
She's added a Picasso to her collection.
Don't forget to add on your travelling expenses/add your expenses on.
It's $45 - $50 if you add in (= include) the cost of postage.
If you add (= calculate the total of) three and four you get seven.
1 abbreviation for Attention Deficit Disorder: a condition in which someone, especially a child, is often in a state of activity or excitement and unable to direct their attention towards what they are doing
2 to put something with something else to increase the number or amount or to make it more important:
3 to calculate the total of a group of numbers:
[ T ] If you add three and four you get seven.
4 to put something with something else in order to improve it or increase the number or amount:
5 to put one number or amount with another in order to calculate a total:
In order to analyze the relative importance of the depreciation values with respect to national account figures, we compared them to timber activity value added.
Since the feast for the translation is not added as well, it is assumed that the addition took place between 1297 and 1306.
Approximately 3 kg of fresh litter obtained from the removal-treatment plots and the surrounding area was added to the addition-treatment plots.
Besides the standard section, in every wave some questions are added to poll the opinions surrounding hot topics.
Some advocates of reform stressed the desirability of adding new subjects to the curriculum, including modern sciences.
At the third, the quality of the parent-child relationship was added and filial obligation removed.
The remaining fourteen boys were added in order to have fuller representation of malnutrition over the entire first 2 years of life.
We therefore suggest that the encoding of discrete category representations be added as a fifth challenge for cognitive neuroscience.