WordWeb Online

1. An arrangement of people or things acting as a unit
   "a defensive formation"; "a formation of planes"
    
2. The act of fabricating something in a particular shape
   - shaping
    
3. The act of forming or establishing something
   - constitution, establishment, organization, organisation [Brit]
    
4. (geology) the geological features of the earth
   - geological formation
    
5. A particular spatial arrangement
    
6. Natural process that causes something to form
   "the formation of gas in the intestine"; "the formation of crystals"; "the formation of pseudopods"
    
7. Creation by mental activity
   "the formation of sentences"; "the formation of memories"

Derived forms: formations

Type of: action, activity, arrangement, article, beginning, commencement, creating by mental acts, fabrication, manufacture, manufacturing, natural action, natural process, object, physical object, placement, start

Encyclopedia: Formation