• Webster's Revised Unabridged Dictionary
    • a Thermoscopic (Physics) Of or pertaining to the thermoscope; made by means of the thermoscope; as, thermoscopic observations.
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Century Dictionary and Cyclopedia
    • thermoscopic Of or pertaining to spectacles which protect the eyes from heat and glare.
    • thermoscopic Pertaining to the thermoscope; made by means of the thermoscope: as, thermoscopic observations.
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In literature:

We are at the thermoscope.
"Heroes of the Telegraph" by J. Munro
The air-thermoscope of Galileo, illustrated in fig.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2" by Various

In news:

Milestones In Cold Research From Galileo's thermoscope to a recent experiment that reached less than a billionth of a degree above absolute zero .