(definition) by Webster 1913 Wed Dec 22 1999 at 0:15:15

Hy"gro*deik (?), n. [Gr. wet, moist, and to show.] Physics

A form of hygrometer having wet and dry bulb thermometers, with an adjustable index showing directly the percentage of moisture in the air, etc.

 

© Webster 1913.

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