A cewar ƙamus na Turanci na Oxford, cryoscope wani kayan aikin kimiyya ne da ake amfani da shi don tantance yanayin daskarewar ruwa, yawanci ta hanyar auna canje-canje a cikin ƙarfin lantarki ko wasu kaddarorin jiki yayin da zafin jiki ya ragu. Kalmar “cryoscope” ta fito daga kalmomin Helenanci “kryos,” ma’ana “sanyi,” da “skopein,” ma’ana “duba ko bincika.”
