reflux /rēˈfluks/

1. A flowing back, an ebb
2. The process of boiling a liquid in a flask with a condenser attached so that the vapour condenses and flows back into the flask, avoiding loss by evaporation (chem; also intransitive verb and transitive verb)
3. The condensed vapour involved in this process

• unacceptable
• unacceptableness
• unacceptance
• unacceptances
• unaccommodated
• unaccommodating
• unaccompanied
• unaccomplished
• unaccomplishment
• unaccountability
• unaccountable
• unaccountableness
• unaccountably
• unaccounted-for
• unaccredited
• unaccusable
• unaccusably
• unaccused
• unaccustomed
• unaccustomedness
• unachievable
• unaching
• unacknowledged
• una corda
• unacquaint