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Definition of Rigor mortis
1. Noun. Temporary stiffness of joints and muscular rigidity occurring after death.
2. Noun. Muscular stiffening that begins 2 to 4 hours after death and lasts for about 4 days.
Definition of Rigor mortis
1. Noun. Temporary stiffness of a body's muscles and joints following death. ¹
¹ Source: wiktionary.com
Medical Definition of Rigor mortis
1. Muscular rigidity which develops in the cadaver usually from 4 to 10 hours after death and lasts 3 or 4 days. (12 Dec 1998)