formation

an arrangement of people or things acting as a unit; "a defensive formation"; "a formation of planes"

the act of fabricating something in a particular shape

the act of forming or establishing something; "the constitution of a PTA group last year"; "it was the establishment of his reputation"; "he still remembers the organization of the club"

(geology) the geological features of the earth

a particular spatial arrangement

natural process that causes something to form; "the formation of gas in the intestine"; "the formation of crystals"; "the formation of pseudopods"

creation by mental activity; "the formation of sentences"; "the formation of memories"