upsetting thermometer

English

Noun

upsetting thermometer (plural upsetting thermometers)

1. (archaic) A thermometer used by turning it upside-down. The column of mercury is broken and, as it remains until the instrument is reset, the reading may be made at leisure.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for “upsetting thermometer”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.)