ACAS ACAS /ˈeɪkæs/

abbreviation

1. Airborne Collision Avoidance System (ACAS) - A system to reduce the risk of mid-air collisions.  ( ACAS )
   Airborne Collision Avoidance System (ACAS) - A system to reduce the risk of mid-air collisions.
   
2. [British] Advisory, Conciliation and Arbitration Service (ACAS) - A UK organization that provides employment relations advice.  ( ACAS [British] )
   Advisory, Conciliation and Arbitration Service (ACAS) - A UK organization that provides employment relations advice.