hydroscope noun. ['hʌɪdrǝskǝʊp] L17.
[Greek hudroskopos water-seeker, hudroskopion water-clock, from hudro- HYDRO-: see -SCOPE.]
1. = HYGROSCOPE. Only in L17.

2. Hist. A water-clock consisting of a graduated cylinder from which water trickled through an aperture in the bottom. E18.

3. A tube closed with clear glass or plastic at one end for looking below the surface of water. E20.

[TahlilGaran] English Dictionary ▲