diaphone /dīˈə-fōn/

1. A siren-like fog signal
2. A bass reed-organ stop made louder by vibrating material
3. All the variants of a phoneme

• proviants
• providable
• provide
• provided
• provided school
• provided schools
• providence
• providences
• provident
• providential
• providentially
• providently
• provident society
• provider
• providers
• rapid-fire
• rapidities
• rapidity
• rapidly
• rapidness
• rapidnesses
• rapids
• rapid-transit chess
• rapier
• rapiers