formation: Meaning and Definition of

for•ma•tion

1. the act or process of forming or the state of being formed: the formation of ice.
2. the manner in which a thing is formed; disposition of parts; formal structure or arrangement.
1. a particular disposition of troops, as in columns, squares, etc.
2. any required assembling of the soldiers of a unit.
1. a body of rocks classed as a stratigraphic unit for geologic mapping. Cf. member (def. 8).
2. the process of depositing rock or mineral of a particular composition or origin.