Expansion may refer to:
Arts, entertainment and media
- L'Expansion, a French monthly business magazine
 - Expansion (album), by American jazz pianist Dave Burrell, released in 2004
 - Expansions (McCoy Tyner album), 1970
 - Expansions (Lonnie Liston Smith album), 1975
 - Expansión (Mexico), a Mexican news portal linked to CNN
 - Expansion (sculpture) (2004) Bronze sculpture illuminated from within
 - Expansión (Spanish newspaper), a Spanish economic daily newspaper published in Spain
 - Expansion pack in gaming, extra content for games, often simply "expansion"
 
Science, technology, and mathematics
- Expansion (geometry), stretching of geometric objects with flat sides
 - Expansion (model theory), in mathematical logic, a mutual converse of a reduct
 - Expansion card, in computing, a printed circuit board that can be inserted into an expansion slot
 - Expansion chamber, on a two-stroke engine, a tuned exhaust system that enhances power output
 - Expansion joint, an assembly that absorbs heat-induced expansion and contraction of construction materials
 - Joule–Thomson effect or Joule–Thomson expansion, the decrease in temperature of a gas when it expands
 - Thermal expansion, the tendency of matter to change in shape, area, and volume in response to a change in temperature
 - Expansion of the universe, the increase of the distance between two distant parts of the universe with time
 
Economics
- Expansion (economics), an increase in the market value of an economy over time
 
Sport
- Expansion team, a new team in a sports league
 
Other uses
- MV Expansion, a former name of American cargo liner MV Dennis Winn
 
See also
- All pages with titles beginning with expansion
 - All pages with titles containing expansion
 - Expansion chamber (disambiguation)
 - Elasticity (disambiguation)
 - Expansionism, a policy of enlarging territory or economic influence
 - Stretching
 
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