generalneutraltechnical
- A gaseous state of a substance that is normally liquid or solid at standard temperature and pressure; the gaseous form produced by evaporation or boiling.
- Fine particles of liquid suspended in the air, appearing as mist or steam.
generaltechnicalengineering
- A phase of fuel or fluid in an engine or mechanical system that can cause malfunction if it interferes with liquid flow (as in a vapor lock).
generalmedicalneutral
- The steam or aerosol produced for inhalation during therapeutic or domestic procedures (e.g., medicinal or aromatic steam).
generalhistoricalliteraryarchaic
- Something insubstantial, fleeting, or ephemeral; a brief or unsubstantial appearance or trace.
generalcolloquial
- Informal shorthand for an indistinct or vague substance or emission (e.g., smoke, fumes, or a cloud of gas).