sublimation

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.

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).

The transformation of an impulse into something socially constructive.

Elevation; exaltation; a making sublime.