Rigor Mortis Definition

The progressive stiffening of the muscles that occurs several hours after death as a result of the coagulation of the muscle protein.
Webster's New World

Origin of Rigor Mortis

  • Latin rigor stiffness mortis genitive of mors death

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin rigor mortis, literally "stiffness of death".

    From Wiktionary

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