The most common and most likely answer to this crossword clue is the 9 letter word SUBLIMATE
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More clues leading to the result SUBLIMATE
Buddy explains!
The straight part
We know that "to turn to vapour" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case to turn to vapour = sublimate.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SUBLIMATE mean?
SUBLIMATE noun- A product obtained by sublimation.
- To change state from a solid to a gas without passing through the liquid state.
- To purify or refine a substance through such a change of state.
- To modify the natural expression of a sexual or primitive instinct in a socially acceptable manner; to divert the energy of such an instinct into some acceptable activity.
- To raise to a place of honor; to refine and exalt.