ˌkɒnstɪˈtjuːʃ(ə)n ˌkɑnstɪˈtuʃ(ə)n ɪˈstæblɪʃmənt fɔɹ.ˈmeɪ.ʃən fə(ɹ).ˈmeɪ.ʃən ˈɔː(ɹ).ɡən.aɪˌzeɪ.ʃən ˌɔɹɡənɪˈzeɪʃən ˌɔːɡənaɪˈzeɪʃən ˌɔɹɡənɪˈzeɪʃən ˌɔɹɡənaɪˈzeɪʃən 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 the act of fabricating something in a particular shape creation by mental activity the formation of sentences the formation of memories a particular spatial arrangement an arrangement of people or things acting as a unit a defensive formation a formation of planes (geology) the geological features of the earth natural process that causes something to form the formation of gas in the intestine the formation of crystals the formation of pseudopods