a thermometer designed to show the lowest temperature recorded between resettings.
Compare maximum thermometer.
Origin of minimum thermometer
First recorded in 1855–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for minimum thermometer
We made it an especial object to observe and reset the minimum-thermometer which you left there last year.The Glaciers of the Alps|John Tyndall