The meaning of the Acronym ACS is...

ACS is

• Attitude Control System
• Advanced Camera For Surveys
• Atmosphere Control Systen
• Advanced Camera for Surveys (Hubble Space Telescope)

More Meanings For ACS:

• Active Character Select
• Alternate Character Set
• Asynchronous Connection Server
• Automatic Class Selection
• Australia Computer Society
• Active Chapter Size
• Ada Compilation System
• Australian Computer Society
• Active Computer Speakers
• Antoniak Coding System
• Adder Comparator Selector
• Another Cisco Server
• Access Control System
• Accredited Certification Scheme
• Authenticated Content Signing

ACS is also in:

• Assembly
• General
• Hardware
• Networking
• Security