infrasonic /in-frə-sonˈik/ (acoustics)

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

inˈfrasound noun

• excluding
• exclusion
• exclusionary
• exclusion clause
• exclusion clauses
• exclusionism
• exclusionisms
• exclusionist
• exclusionists
• exclusion order
• exclusion orders
• exclusion principle
• exclusion principles
• exclusions
• exclusion zone
• exclusion zones
• exclusive
• Exclusive Brethren
• exclusive dealing
• exclusive disjunction
• exclusive economic zone
• exclusively
• exclusiveness
• exclusivenesses
• exclusive reckoning