Main Entry:

ex·pan·sion

Pronunciation:

\ik-ˈspan(t)-shən\

Function:

noun

Date:

1611

1: expanse2: the act or process of expanding <territorial expansion> <economic expansion> <expansion of the universe>3: the quality or state of being expanded4: the increase in volume of working fluid (as steam) in an engine cylinder after cutoff or in an internal combustion engine after explosion5 a: an expanded part b: something that results from an act of expanding <the book is an expansion of a lecture series>6: the result of carrying out an indicated mathematical operation : the expression of a function in the form of a series

— ex·pan·sion·al \-ˈpanch-nəl, -chə-n^əl\ adjective