You searched for: “isochronon
isochronon (s) (noun), isochronons (pl)
A clock designed to keep very accurate time: In the science fiction movie, the main character looked at the isochronon to check out the exact time when her servant was to come into the room.
This entry is located in the following units: chrono-, chron- (page 8) iso-, is- (page 3)