hygroscopic

/ˌhaɪɡrəˈskɑpɪk/
adjective
  1. Able to absorb and hold water from the air.
    • The hygroscopic material in the packet keeps electronics dry.
    • Salt is hygroscopic, which is why it clumps in humid weather.
    • Honey is naturally hygroscopic, helping it stay moist and fresh.
What does "hygroscopic" mean? | whatsthatwordmean | whatsthatwordmean