| hygroscopic | Pertaining to tissue or substance that is sensitive to water orwater vapor. Pertaining to a substance that accelerates the condensation of water vapor. Pertaining to water that iselectrostatically bound to the surface of dirt particles and is thereforeunavailable to plants. (09 Oct 1997) |
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| hygroscopic expansion | Expansion due to the absorption of moisture, in dental casting, the addition of water to the surface of the casting investment during setting to increase the size of the mold. (05 Mar 2000) |
| hygroscopicity | <botany> The property possessed by vegetable tissues of absorbing or discharging moisture according to circumstances. Source: Websters Dictionary (01 Mar 1998) |