- an ancient device for measuring time by the regulated flow of water or mercury through a small aperture.
Origin of clepsydra
1640–50; < Latin < Greek klepsýdra, equivalent to kleps- (klep-, stem of kléptein to steal, conceal + -s- formative in derivation) + hydra, derivative of hýdōr water
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for clepsydra
They had but two measures of time—the clepsydra, or water-clock, and the sun-dial.Our Little Lady
Emily Sarah Holt
Like the sun-dial and the clepsydra, the hour-glass is older than we know.
The principle is the same as that of the simplest form of clepsydra.
The Djyotisha also teaches the art of constructing a clepsydra, or water-clock.
The water-clock, or clepsydra, has been known to the Chinese for centuries.China and the Chinese
Herbert Allen Giles
- an ancient device for measuring time by the flow of water or mercury through a small apertureAlso called: water clock
C17: from Latin, from Greek klepsudra, from kleptein to steal + hudōr water
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
Word Origin and History for clepsydra
Online Etymology Dictionary, © 2010 Douglas Harper