• Restriction (mathematics), an aspect of a mathematical function
• Restrictions (album)
  Restrictions (album)
  Restrictions is the third and the last album by the original line-up of the American hard rock supergroup Cactus, released in 1971 under the Atco label. "Token Chokin'" also was issued as a single, as well as "Evil", "Alaska" and "Sweet Sixteen" also were released on A and B sides...
  
  , an album by Cactus
• Restriction enzyme
  Restriction enzyme
  A Restriction Enzyme is an enzyme that cuts double-stranded DNA at specific recognition nucleotide sequences known as restriction sites. Such enzymes, found in bacteria and archaea, are thought to have evolved to provide a defense mechanism against invading viruses...
  
  , a type of enzyme that cleaves genetic material
• Restriction, a term in medieval Supposition theory
  Supposition theory
  Supposition theory was a branch of medieval logic that was probably aimed at giving accounts of issues similar to modern accounts of reference, plurality, tense, and modality, from within an Aristotelian context. Philosophers such as John Buridan, William of Ockham, William of Sherwood, Walter...
  
  

See also

• Regulation
  Regulation
  Regulation is administrative legislation that constitutes or constrains rights and allocates responsibilities. It can be distinguished from primary legislation on the one hand and judge-made law on the other...
  
  
• Racial segregation
  Racial segregation
  Racial segregation is the separation of humans into racial groups in daily life. It may apply to activities such as eating in a restaurant, drinking from a water fountain, using a public toilet, attending school, going to the movies, or in the rental or purchase of a home...
  
  
• Religious segregation
  Religious segregation
  Religious segregation is the separation of people according to their religion. The term has been applied to cases of religious-based segregation occurring as a social phenomenon, as well as to segregation arising from laws, whether explicit or implicit....
  
  
• Restrictive covenant
  Restrictive covenant
  A restrictive covenant is a type of real covenant, a legal obligation imposed in a deed by the seller upon the buyer of real estate to do or not to do something. Such restrictions frequently "run with the land" and are enforceable on subsequent buyers of the property...
  
  
• Regression analysis
  Regression analysis
  In statistics, regression analysis includes many techniques for modeling and analyzing several variables, when the focus is on the relationship between a dependent variable and one or more independent variables...