Origin: Latin suffix -tion
Addition has 7 different meanings across 1 category:
the act of adding one thing to another
"the addition of flowers created a pleasing effect"
"the addition of a leap day every four years"
a suburban area laid out in streets and lots for a future residential area
"The city council approved plans to transform that vacant industrial zone into a new addition complete with single-family homes and local shops."
The act of adding anything.
"With the new addition to our team, we finally have enough staff to handle the increased workload during the holiday rush."
In plain English: Addition is the math operation of combining two numbers to find their total sum.
"The final addition to our grocery list was some fresh milk."
Usage: Use "addition" to refer to the act of combining numbers or items, such as in the phrase "math addition." It also describes something new that is brought into an existing group, like a new room added to a house.
Derived from the Latin additio, this noun comes from the verb addere meaning "to put to" or "to add." It originally referred to the act of joining one thing to another.