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

• photomechanical
• photomechanically
• photometer
• photometers
• photometric
• photometries
• photometry
• photomicrograph
• photomicrographer
• photomicrographers
• photomicrographic
• photomicrographs
• photomicrography
• photomontage
• photomontages
• photomosaic
• photomosaics
• photomultiplier
• photomultipliers
• photon
• photonastic
• photonasties
• photonasty
• photonegative
• photonic