Dictionary.net

• A thermometer by merely inverting which the temperature may be registered. The column of mercury is broken and, as it remains until the instrument is reset, the reading may be made at leisure.

2010 - New Age Dictionary Database
By Oddity Software

• A thermometer by merely inverting which the temperature may be registered. The column of mercury is broken and, as it remains until the instrument is reset, the reading may be made at leisure.

1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.