Definition of "moisture-proof" [moisture-proof]

• Proof against moisture or its ill effects; not liable to be affected by moisture; damp-proof: as, transformers mounted in moisture-proof iron cases.

The Century Dictionary (Public Domain)

• "Mr. Groves installed a sound system with moisture-proof speakers as well as high-tech storage."
• "He and the second guard work together to wrap our dictionary in a swaddling of moisture-proof aluminum."
• "Frozen, peeled or unpeeled,   lychees in moisture-proof containers can keep for two years."