1. A semitranslucent form of opal that becomes translucent or transparent when immersed in water

Derived forms: hydrophanes

• mousy
• mouth
• mouth bow
• mouth harp
• mouth hole
• mouth off
• mouth organ
• mouth-to-mouth
• mouth-to-mouth resuscitation
• mouth-watering
• mouthbreeder
• mouthful
• mouthless
• mouthlike
• mouthpart
• mouthpiece
• mouthwash
• mouthy
• mouton
• movability
• movable
• movable barrier
• movable feast
• movableness
• movably