infrasonic /in-frə-sonˈik/ (acoustics)

1. (of frequencies) below the usual audible limit
2. Of, using or produced by infrasonic vibrations or pressure waves

• catworms
• Caucasian
• Caucasoid
• cauchemar
• cauchemars
• caucus
• caucused
• caucuses
• caucusing
• caudad
• caudal
• caudal anaesthesia
• caudally
• caudate
• caudated
• caudex
• caudexes
• caudices
• caudicle
• caudicles
• caudillo
• caudillos
• caudle
• caudle cup
• caudle cups