expansion
Pronunciation:
/ɪkˈspænʃən/noun
Definitions
The act or process of expanding.
Example: The expansion of metals and plastics in response to heat is well understood.
The fractional change in unit length per unit length per unit temperature change.
A new addition.
Example: My new office is in the expansion behind the main building.
A product to be used with a previous product.
Example: This expansion requires the original game board.