GCA

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

• phenylthiocarbamide
• pheon
• pheons
• Pherecratean
• Pherecratic
• pheromonal
• pheromone
• pheromones
• phese
• phew
• phi
• PHI
• phial
• phialiform
• phialled
• phialling
• phials
• Phi Beta Kappa
• -phil
• phil-
• Phil
• philabeg
• Philadelphaceae
• Philadelphia chromosome
• Philadelphia lawyer