helicon /helˈi-kon or -kən/

A circular bass tuba

• audiological
• audiologies
• audiologist
• audiologists
• audiology
• audiometer
• audiometers
• audiometric
• audiometrically
• audiometrician
• audiometricians
• audiometrist
• audiometrists
• audiometry
• audiophil
• audiophile
• audiophiles
• audiophils
• audios
• audiotape
• audiotapes
• audiotyping
• audiotypings
• audiotypist
• audiotypists