noun
- a powerful fog signal that produces a low-pitched sound by means of compressed air
Usage: nautical
Examples
- The diaphone’s deep blast warned ships of the rocky coastline.
- Lighthouse keepers maintained the diaphone to ensure it functioned during foggy weather.
- The haunting sound of the diaphone echoed across the harbor.
- Maritime authorities replaced the old diaphone with modern electronic fog signals.
- Sailors could hear the diaphone from several miles away in thick fog.