sublimation

1. (chemistry) The transition of a substance from the solid phase directly to the vapor state such that it does not pass through the intermediate liquid phase.Examples: "It uses dry ice pellets (capsules of frozen carbon dioxide), blown at supersonic speed onto the railhead through a small nozzle. Any leaf contamination on the line is frozen, becoming brittle. The pellets then change instantly from solid to gas without going through a liquid stage (a process known as sublimation)."countableuncountable

2. (psychology) The transformation of an impulse into something socially constructive.countableuncountable