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

• eyestalks
• eyestrain
• eyestrains
• eye-string
• eye-strings
• eye teeth
• Eyeti
• Eyetie
• eye to eye
• eye tooth
• eye up
• eyewash
• eyewashes
• eye-water
• eyewear
• eye-wink
• eye-winks
• eyewitness
• eyewitnesses
• eying
• eyliad
• eyne
• eyot
• eyots
• eyra