TIME MEASUREMENT HISTORY OF SCIENCE A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site clepsydra An Egyptian clepsydra Also known as a water clock, an instrument in which the discharge of water from a storage tank is monitored in order to measure the passing of time. Clepsydras were used from ancient times until the Renaissance. "Clepsydra" is Greek for "water thief." Related categories    • TIME MEASUREMENT AND PUZZLES    • HISTORY OF SCIENCE Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP