formation

noun

1. an arrangement of people or things acting as a unit"a defensive formation"
2. the act of fabricating something in a particular shape
3. the act of forming or establishing something"the constitution of a PTA group last year"
4. (geology) the geological features of the earth
5. a particular spatial arrangement
6. natural process that causes something to form"the formation of gas in the intestine"
7. creation by mental activity"the formation of sentences"