hygroscope

[n] - hygrometer that shows variations in the relative humidity of the atmosphere
Found on http://www.webdictionary.co.uk/definition.php?query=hygroscope

Hygroscope

• (n.) An instrument which shows whether there is more or less moisture in the atmosphere, without indicating its amount.
Found on http://thinkexist.com/dictionary/meaning/hygroscope/

hygroscope

noun hygrometer that shows variations in the relative humidity of the atmosphere
Found on https://www.encyclo.co.uk/local/20974

Hygroscope

Hy'gro·scope noun [ Greek ... wet + -scope : confer French hygroscope .] (Physics) An instrument which shows whether there is more or less moisture in the atmosphere, without indicating its amount.
Found on http://www.encyclo.co.uk/webster/H/79

hygroscope

hygroscope An hygrometer, or an instrument that indicates changes in atmospheric humidity, that shows variations in the relative humidity of the atmosphere. Unlike a hygrometer, a hygroscope only indicates a change in relative humidity, without measuring the magnitude of the change.
Found on http://www.wordinfo.info/words/index/info/view_unit/1013/3

hygroscope

instrument for displaying changes in air humidity
Found on http://phrontistery.info/h.html
No exact match found