"expansion" in the noun sense
1. expansion, enlargement
the act of increasing (something) in size or volume or quantity or scope
2. expansion
a function expressed as a sum or product of terms
"the expansion of (a+b)^2 is a^2 + 2ab + b^2"
3. expansion, enlargement, elaboration
a discussion that provides additional information
4. expansion, expanding upon
adding information or detail
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License