Transition

• In telecommunication, a transition is the change from one signal state to another signal state.

• In music a transition is a change from one unit, section, parameter, or element or set of parameters or elements, to another. Transitions may be smooth and connected, or disjointed and contrasting.

• In television and film a transition is a change from one scene to another.

• In politics, transition is change from one political system to another, for example from dictatorship to democracy.

• In genetics, a transition is a mutation changing a purine to another purine nucleotide (A <-> G) or a pyrimidine to another pyrimidine nucleotide (C <-> T). See also transversion.

• In physics, a transition is a change from one physical state to another. A transition cannot occur in any situation but are governed by selection rule.

• Transitioning is the process of moving from one gender role to another.

• transition was a Paris-based literary journal of the 1920s and 1930s.

• In chemistry, a transition state describes how the atoms/molecules are organised while changing from a reactant to a product, at the highest energy (least stable) point along the reaction coordinate.