vapor

1. n. Any substance in the gaseous, or aeriform, state, the condition of which is ordinarily that of a liquid or solid. Source: opted

2. n. In a loose and popular sense, any visible diffused substance floating in the atmosphere and impairing its transparency, as smoke, fog, etc. Source: opted

3. n. Wind; flatulence. Source: opted

4. n. Something unsubstantial, fleeting, or transitory; unreal fancy; vain imagination; idle talk; boasting. Source: opted

5. n. An old name for hypochondria, or melancholy; the blues. Source: opted

6. n. A medicinal agent designed for administration in the form of inhaled vapor. Source: opted

7. n. To pass off in fumes, or as a moist, floating substance, whether visible or invisible, to steam; to be exhaled; to evaporate. Source: opted

8. n. To emit vapor or fumes. Source: opted

9. n. To talk idly; to boast or vaunt; to brag. Source: opted

10. v. t. To send off in vapor, or as if in vapor; as, to vapor away a heated fluid. Source: opted

11. n. a visible suspension in the air of particles of some substance Source: wordnet

12. n. the process of becoming a vapor Source: wordnet

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