1. a visible suspension in the air of particles of some substance
Similar word(s): vapor
2. the process of becoming a vapor
Definition categories: process
1. (intransitive) To become vapour; to be emitted or circulated as vapour.
2. (transitive) To turn into vapour.
- to vapour away a heated fluid
3. (intransitive) To use insubstantial language; to boast or bluster.
4. To emit vapour or fumes.