infrasonic /in-frə-sonˈik/ (acoustics)

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

• gracile
• gracilities
• gracility
• gracing
• graciosities
• graciosity
• gracioso
• graciosos
• gracious
• gracious living
• graciously
• gracious me
• graciousness
• graciousnesses
• grackle
• grackles
• grad
• gradability
• gradable
• gradate
• gradated
• gradates
• gradatim
• gradating
• gradation