special relativity(redirected from Theoretical total mass-energy)
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special relativity(rel-ă-tiv -ă-tee) See relativity, special theory.
special relativity[′spesh·əl rel·ə′tiv·əd·ē]
The division of relativity theory which relates the observations of observers moving with constant relative velocities and postulates that natural laws are the same for all such observers.