Transition

Transition or transitional may refer to:

Biology

 * 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 fossilized remains of a lifeform that exhibits the characteristics of two distinct taxonomic groups
 * A phase during childbirth contractions during which the cervix completes its dilation

Gender and sex

 * Gender transitioning, the process of changing one's gender presentation to accord with one's internal sense of one's gender – the idea of what it means to be a man or woman
 * Sex reassignment therapy, the physical aspect of a gender transition

Physics

 * 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
 * Quantum phase transition, a phase transformation between different quantum phases
 * Quantum Hall transitions, a quantum phase transition that occurred because of the quantum Hall effect
 * Transition radiation, contrasts to the Cherenkov radiation
 * Atomic electron transition, the transition of an electron from one quantum state to another within an atom
 * Beta decay transition, nuclear beta decay determined by changes in spin
 * Laminar–turbulent transition, the process of a laminar fluid flow becoming turbulent
 * Glass transition, the reversible transition in amorphous materials
 * Lambda transition, universality class in condensed matter physics

Chemistry

 * 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
 * SRM transition, the precursor and product ion pair in Selected reaction monitoring (SRM) in analytical chemistry

Computing

 * A movement between states of an abstract computer, described by a transition system
 * A phase of the project lifecycle in the Rational Unified Process
 * A paradigm describing changes of communication mechanisms, see Transition (computer science)

Other uses in technology

 * Transitions, a brand of photochromic eyeglass lens and sponsor of the PGA Tour Transitions Championship
 * Transition (roadable aircraft), a flying car (or drivable airplane) made by Terrafugia
 * "Shifting gears" on a railroad locomotive; see Diesel locomotive

Government and politics

 * Democratic transition
 * Transition management (governance)
 * Social change, often synonymous with social transition
 * Peaceful transition of power a norm or practice in democratic governments, of transitions of power between different political parties.
 * United States presidential transition, the transfer of federal executive branch power from the incumbent President of the United States to the president-elect.

Literature

 * Transition (fiction), a narrative element or general aspects of writing style that signal changes in a story
 * Transition (linguistics), a certain word, expression, or other device that gives text or speech greater cohesion by making it more explicit

Works

 * transition (literary journal) (1927-1938), an experimental literary journal that featured surrealist, expressionist, and Dada art and artists
 * Transition (literary journal) (1948–1950), a revival of the above-mentioned literary journal
 * Transition (novel), a novel by Iain Banks
 * Transitions (novel series), a novel series by R A Salvatore
 * Transition Magazine, a political and literary journal published from 1961 to 1976 on the African continent, and revived in 1991 in the United States
 * Transitions Online, Czech publisher of the Transitions news journal
 * Transition, a novel by Vonda N. McIntyre 1990
 * The Transition Weapons of Choice, the failed military experiment in John Birmingham's trilogy Axis of Time

Film, radio, and television

 * Film transition, a method of juxtaposing two scenes, including:
 * Wipe (transition), a type of film transition where one shot replaces another by travelling from one side of the frame to another or with a special shape
 * Dissolve (filmmaking), a gradual transition from one image to another
 * Transitions (film), the world's first IMAX film in 3D
 * Transition (1989 film), a film by the Iranian director Kamal Tabrizi
 * Transition (2023 film), a documentary film
 * Transitions (radio show), a weekly two-hour radio show on Kiss 100 in the UK
 * "Transitioning" (Glee), an episode of US television series Glee
 * "Transitions" (Law & Order: Special Victims Unit episode), an episode of US television series Law & Order: Special Victims Unit
 * "Transition" (The West Wing), an episode of US television series The West Wing
 * "Transitions" (The Wire), an episode of US television series The Wire
 * "Transitions", an episode of US television series Without a Trace

Music

 * Transition (music), the middle passage of a piece of music
 * Transition (band), English indie rock band

Albums

 * Transition (John Coltrane album), 1970
 * Transition (The First Edition album), 1971
 * Transition (Buddy Rich Lionel Hampton album), 1974
 * Transition (John Miles album), 1985
 * Transition (Fly to the Sky album), 2006
 * Transition (Ryan Leslie album), 2009
 * Transition (Chipmunk album), 2011
 * Transition (Steve Lukather album), 2013
 * Transitions (John Digweed album), 2006
 * Transitions (Aghora album), 2006
 * Transitions (Westbound Train album), 2006
 * Transitions (EP), 2010 by Canadian post-hardcore band Silverstein

Songs

 * "Transition", by Pestilence from Obsideo, 2013
 * "Transition", by Theatre Of Tragedy from Forever Is the World, 2009
 * "The Transition", by Hawthorne Heights from The Silence in Black and White, 2004
 * "Transitions", by Beastie Boys from Ill Communication, 1994
 * "Transitions", by Zao from The Crimson Corridor, 2021

Other arts

 * Transitional Style, of furniture and interior design

Sport

 * Transition (grappling), in grappling is a move from one grappling hold or grappling position to another
 * Transitions Championship, a men's professional golf tournament on the PGA Tour

Other uses

 * Transition Glacier, a glacier on the east coast of Alexander Island
 * Care transition, wherein a patient changes health care provider