Definitions

1. verb

to cause something to change into vapour, especially by heating it

“The heat from the fire vapourised the water in the pot.”

2. noun

the act of changing something into vapour

“The vapourise of the water was a sign of the rising temperature.”

3. verb (transitive)

to make something seem less substantial or impressive

“The new policy vapourised the company’s promises of job security.”