Formation

• Back-formation, the process of creating a new lexeme by removing or affixes • Word formation, the creation of a new word by adding affixes ==Mathematics and science==

• Cave formation or speleothem, a secondary mineral deposit formed in a cave • Class formation, a topological group acting on a module satisfying certain conditions • Formation (group theory), a class of groups that is closed under some operations • Formation constant, an equilibrium constant for the formation of a complex in solution • Formation enthalpy, standard heat of formation of a compound • Formation (geology), a formally named rock stratum or geological unit • Formation of rocks, how rocks are formed • Formation and evolution of the Solar System, history of the Solar System • Rock formation, an isolated, scenic, or spectacular surface rock outcrop • Vegetation formation, a concept used to classify vegetation communities ==Technology==

• Formation level, the native material underneath a constructed road, pavement or railway • Formation (Li-ion battery), a process step in the manufacture of Li-ion batteries necessary for long cell life • Formation water, water that is produced as a byproduct during oil and gas production ==Military==

• Formation flying, the disciplined flight of two or more aircraft under the command of a flight leader • Formation (military), a high-level military organization • Tactical formation, the arrangement or deployment of moving military forces • Formation, an element in order of battle as a formal assembly of military personnel usually to receive the course of actions (operation order) or get deployed to operations • Formation may be tactical or ceremonial ==Music==

• Formation Records, a record label headed by DJ SS • "Formation" (song), a song by American singer Beyoncé on her 2016 album Lemonade • The Formation World Tour, concert tour by Beyoncé for her album Lemonade ==Religion==

• Formations or saṅkhāra, an important Buddhist concept • Formation in the Catholic Church, the personal preparation that the Catholic Church offers to people with a defined mission ==Sports==

• Formation (association football), how team players are positioned on the pitch • Formation (American football), the positions in which players line up before the start of a down • Formation (bandy), how the players are positioned on the rink • Formation dance, a style of ballroom dancing • Formation finish, a staged motor-race finish in which multiple vehicles of the same team cross the finish line together ==Writing==

• Formation (book), a bildungsroman by Brad Mehldau ==Other==

• Contract formation in law; an offer, acceptance, consideration, and a mutual intent to be bound • Formation 8, an American venture capital firm in San Francisco, California • Formation of a coalition government, led by a formateur • Government formation in a parliamentary system • Formations, imprint of Ohio State University Press ==See also==