Hygrometer Hygrometer A generic term for a device that measures atmospheric humidity. The term is for use where details of the make, model number and measurement principle are not known. 2010-05-18 16:10:58.0 SDN:L22::TOOL0282 SDN:L22::TOOL0282 SDN:L22::TOOL0282 1 1 2010-05-18 16:10:58.0 accepted false