GCA

1. Ground control (or controlled) approach system, or ground control apparatus (aeronautics)
2. Guatemala, Central America (IVR)

• ASLEF
• AS level
• ASLIB
• Aslib
• as like as chalk and cheese
• as likely as not
• as long as
• as long as one's arm
• aslope
• -asm
• ASM
• a small fortune
• as many as
• asmear
• Asmoday
• Asmodeus
• asmoulder
• as much
• as much as
• as now
• asocial
• as of
• as of now
• as often as not
• as one man