(advertising) One of four archetypal dramatic structures of commercials, characterized by an emotionally neutral beginning with an enormous leap in positive emotions generated by seeing the branded product in use.

In amorphous materials, gradual and reversible transition from a hard and relatively brittle "glassy" state into a viscous or rubbery state (or opposite) over a range of temperature range.

(fluid dynamics) The point in space at which fluid flow around an object changes from laminar to turbulent.

(chemistry) A transition element

plural of public transit

(demography) The process that represents the transition from high birth and death rates to low birth and death rates as a country develops from a pre-industrial to an industrialized economic system.

(databases) An attribute of a relation that depends on a key but also on a third attribute which is not a key; this is a violation of third normal form.

plural of transition zone

plural of transition point

(Catholicism) A deacon intending to become a priest and therefore obliged to begin assuming additional responsibilities, such as the recitation of the breviary.