rigor mortis

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rigor

 [rig´or, ri´gor]
1. a chill; rigidity.
2. strict discipline or scrupulous adherence to a given set of standards.
rigor mor´tis the stiffening of a dead body accompanying depletion of adenosine triphosphate in the muscle fibers.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

rig·or mor·'tis

stiffening of the body, 1-7 hours after death, from hardening of the muscular tissues as a consequence of the coagulation of the myosinogen and paramyosinogen; it disappears after 1-6 days or when decomposition begins.
Farlex Partner Medical Dictionary © Farlex 2012

rigor mortis

(môr′tĭs)
n.
Muscular stiffening following death.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
Stiffness of a cadaver. The following are crude approximations of the time of death, based on temperature and presence/absence of rigor
warm and flaccid < 3 hours
warm and stiff 3-8 hours
cold and stiff 8-36 hours
cold and flaccid > 36 hours
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

rigor mortis

Post-mortem corporal rigidity, stiff stiffness Pathology Board-like contraction of skeletal muscles that first appears in jaw and other short muscles–eg, of hand, 2-4 hrs after death; RM later appears on the trunk and extremities, peaks at 24-48 hrs; it disappears in the same order as it developed. Cf Livor mortis.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

rig·or mor·tis

(rī'gōr mōr'tis)
Stiffening of the body, from 1-7 hours after death, from hardening of the muscular tissues in consequence of the coagulation of the myosinogen and paramyosinogen; it disappears after 1-6 days, or when decomposition begins.
Synonym(s): postmortem rigidity.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

rigor mortis

The stiffening of muscles which occurs after death as a result of the loss of ATP so that the cross bridges cannot disconnect from actin. Rigor usually starts about 3 or 4 hours after death and is usually complete in about 12 hours. It may start much earlier, sometimes almost immediately, if the subject was engaged in strenuous activity or was fevered or suffering convulsions before death. It passes off as enzymes break down and soften the muscles over the course of the next 2 or 3 days.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

rigor mortis

the temporary stiffening of a body after death.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

rig·or mor·tis

(rig'ŏr mōr'tis)
Stiffening of the body, from 1-7 hours after death, due to hardening of the muscular tissues in consequence of the coagulation of the myosinogen and paramyosinogen.
Synonym(s): postmortem rigidity.
Medical Dictionary for the Dental Professions © Farlex 2012