CAS

(electronics, communication) Initialism of channel-associated signalling.

(military) Initialism of Combat Armor Suit. Used for a powered, armed and armored exoskeleton, in fiction and military research.

(aviation) Initialism of calibrated airspeed.

(military, aviation) Acronym of close air support.

(mathematics, computing) Initialism of computer algebra system.

(organisation) Initialism of complex adaptive system.

(computing, uncountable) Initialism of compare and swap.

Initialism of cowboy action shooting.