GCA

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

• pyrethroid
• pyrethroids
• Pyrethrum
• Pyrethrums
• pyretic
• pyretologies
• pyretology
• pyretotherapies
• pyretotherapy
• Pyrex
• pyrexia
• pyrexial
• pyrexias
• pyrexic
• pyrheliometer
• pyrheliometers
• pyrheliometric
• pyridine
• pyridines
• pyridoxal
• pyridoxals
• pyridoxin
• pyridoxine
• pyridoxines
• pyridoxins