1. An arrangement of people or things acting as a unit (synset 108443418)
    "a defensive formation"; "a formation of planes"
  2. The act of fabricating something in a particular shape (synset 100927021)
  3. The act of forming or establishing something (synset 100237945)
    "the constitution of a PTA group last year"; "it was the establishment of his reputation"; "he still remembers the organization of the club"
  4. (geology) the geological features of the earth (synset 109310874)
  5. A particular spatial arrangement (synset 103389963)
  6. Natural process that causes something to form (synset 113504691)
    "the formation of gas in the intestine"; "the formation of crystals"; "the formation of pseudopods"
  7. Creation by mental activity (synset 100929331)
    "the formation of sentences"; "the formation of memories"

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