This is using the word 'vaporisation' in its strict scientific sense – a phase transition from the liquid phase to vapour – rather than what Wikipedia calls its "colloquial or hyperbolic" sense – "the physical destruction of an object that is exposed to intense heat or explosive force, where the object is actually blasted into small pieces rather than literally converted to gaseous form."
I've explained before on these pages that I had a scientific education, and I must admit that when I hear the word 'vaporisation' I think of the second meaning.
Before introducing the "colloquial or hyperbolic" meaning, Wikipedia explains that "There are two types of vaporization: evaporation and boiling. Evaporation is a surface phenomenon, whereas boiling is a bulk phenomenon." I'd have been more confident in answering this question if it had asked for the opposite of evaporation.
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