1. Acknowledgment of message received
   - ten-four [US]

Encyclopedia: 10-4

• Caddo
• Caddoan
• Caddoan language
• caddy
• cadence
• cadenced
• cadency
• cadent
• cadential
• cadenza
• cadet
• cadetship
• cadge
• cadger
• cadi
• Cadillac
• Cadiz
• cadmium
• cadmium cell
• cadmium orange
• cadmium sulfide
• cadmium sulphide
• cadmium yellow
• cadmium yellow pale
• Cadmus