Transition or transitional might refer to:

Government and economics

  • Transition economy, an economy which is changing from a centrally planned economy to a free market
  • Transitional government, an emergency or interim government set up when a political void has been created by the collapse of a quite large government
  • Spanish transition to democracy after the death of Francisco Franco
  • Transition (outsourcing), the process of migrating knowledge, systems, and operating capabilities from an outsourcing environment to an in-house staff
  • Transition towns, a grassroots network of communities that are working to build resilience in response to peak oil, climate destruction, and economic instability

Mathematics, science, and technology


  • Transition (genetics), a point mutation that changes a purine nucleotide to another purine (A ↔ G) or a pyrimidine nucleotide to another pyrimidine (C ↔ T)
  • Transitional fossil, any fossilised remains of a lifeform that exhibits the characteristics of two distinct taxonomic groups
  • A phase throughout childbirth contractions throughout which the cervix completes its dilation

Chemistry and physics

  • Transition metal, either an element whose atom has an incomplete d sub-shell, or any element in the d-block of the periodic table
  • Transition state, of a chemical reaction is a particular configuration along the reaction coordinate
  • Phase transition, a transformation of the state of matter; for example, the change between a solid and a liquid, between liquid and gas or between gas and plasma
  • Laminar-turbulent transition, the process of a laminar fluid flow fitting turbulent
  • SRM transition, the precursor and product ion pair in Selected reaction monitoring (SRM) in analytical chemistry


Other uses in technology

Arts and entertainment


  • Transition (fiction), a narrative element or general aspects of writing style that signal changes in a story
  • Transitions (linguistics), certain words, expressions, or additional devices that give text or speech greater cohesion by making it more explicit


Film, radio, and television





Other arts

  • Transitional Style of furniture and interior design, either modern or referring to mid-18th Century French furniture


Other uses