an electrical device for detecting the presence of water, as from overflow or leakage.
any of various devices for preventing injury to a steam boiler when its water sinks below a certain level.
Origin of hydrostat
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a device that detects the presence of water as a prevention against drying out, overflow, etc, esp one used as a warning in a steam boiler
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012