formation

/fɔrˈmeɪ·ʃən/ n [C/U] (COMING TOGETHER)

Definition

› the process by which something comes into existence or begins to have a particular order or shape: [U] They called for the formation of a committee to investigate corruption. › A formation is the particular form that something has taken, or the things or people having this form: [C] unusual cloud formations [U] The soldiers marched in formation (= in an orderly arrangement).

(Definition of formation n (COMING TOGETHER) from the Cambridge Academic Content Dictionary © Cambridge University Press)