Definitions for "Absolute time"
Geologic time measured in a specific duration of years (in contrast to relative time, which involves only the chronological order of events).
Geological time measured in years and determined by the time-dependent decay of radioactive isotopes.
A universal time measurement which is the same for all observers in the universe irrespective of their movement. In Newtonian Mechanics absolute time plays a decisive role – Einstein was the first person to demonstrate that time must also be understood relative to a point of reference.