[1] : The Collaborative International Dictionary of English v.0.48

rigor \ri"gor\, n. l. see rigor., below.
   1. rigidity; stiffness.
      1913 webster

   2. ed. a sense of chilliness, with contraction of the skin;
      a convulsive shuddering or tremor, as in the chill
      preceding a fever.
      1913 webster

   rigor calorisl., rigor of heat physiol., a form of
      rigor mortis induced by heat, as when the muscle of a
      mammal is heated to about 50deg c.

   rigor mortisl., rigor of death, death stiffening; the
      rigidity of the muscles that occurs at death and lasts
      till decomposition sets in. it is due to the formation of
      myosin by the coagulation of the contents of the
      individual muscle fibers.
      1913 webster
see also:
rigor rigor caloris rigor mortis 

[2] : The Collaborative International Dictionary of English v.0.48

rigor \rig"or\, n. oe. rigour, of. rigour, f. rigueur, from l.
   rigor, fr. rigere to be stiff. see rigid. written also
   rigour.
   1. the becoming stiff or rigid; the state of being rigid;
      rigidity; stiffness; hardness.
      1913 webster

            the rest his look
            bound with gorgonian rigor not to move. --milton.
      1913 webster

   2. med. see 1st rigor, 2.
      1913 webster

   3. severity of climate or season; inclemency; as, the rigor
      of the storm; the rigors of winter.
      1913 webster

   4. stiffness of opinion or temper; rugged sternness;
      hardness; relentless severity; hard-heartedness; cruelty.
      1913 webster

            all his rigor is turned to grief and pity. --denham.
      1913 webster

            if i shall be condemn'd
            upon surmises, . . . i tell you
            't is rigor and not law.              --shak.
      1913 webster

   5. exactness without allowance, deviation, or indulgence;
      strictness; as, the rigor of criticism; to execute a law
      with rigor; to enforce moral duties with rigor; -- opposed
      to lenity.
      1913 webster

   6. severity of life; austerity; voluntary submission to pain,
      abstinence, or mortification.
      1913 webster

            the prince lived in this convent with all the rigor
            and austerity of a capuchin.          --addison.
      1913 webster

   7. violence; force; fury. obs.
      1913 webster

            whose raging rigor neither steel nor brass could
            stay.                                 --spenser.
      1913 webster

   syn: stiffness; rigidness; inflexibility; severity;
        austerity; sternness; harshness; strictness; exactness.
        1913 webster
see also:
rigid rigour rigor lenity 

[3] : WordNet (r) 2.0

rigor
     n 1: something hard to endure; "the asperity of northern winters"
          syn: asperity, grimness, hardship, rigour, severity,
           rigorousness
     2: the quality of being logically valid syn: cogency, validity,
         rigour
     3: excessive sternness; "severity of character"; "the harshness
        of his punishment was inhuman"; "the rigors of boot camp"
        syn: severity, harshness, rigour, inclemency, hardness,
         stiffness
see also:
asperity grimness hardship rigour severity rigorousness 
cogency validity harshness inclemency hardness 
stiffness 

[4] : Moby Thesaurus II by Grady Ward, 1.0

240 moby thesaurus words for "rigor":
   albigensianism, catharism, franciscanism, sabbatarianism, trappism,
   waldensianism, yoga, absolute zero, absoluteness, abstinence,
   abstruseness, accuracy, acerbity, acidity, acridity, acrimony,
   acuteness, adverse circumstances, adversity, affliction,
   aggravation, algidity, anchoritic monasticism, anchoritism,
   animality, annoyance, arduousness, asceticism, asperity,
   astringency, atrocity, attention to detail, attention to fact,
   austerity, barbarity, bite, bitterness, bleakness, blight,
   bloodlust, bothersomeness, briskness, brutality, bummer,
   burdensomeness, care, care for truth, causticity, chill,
   chilliness, circumstantiality, cold, coldness, complexity,
   complication, conscientiousness, cool, coolness, coolth,
   correctness, crispness, criticality, criticalness, cross,
   cryogenics, cryology, curse, decrease in temperature, delicacy,
   destructiveness, detail, difficulties, difficultness, difficulty,
   downer, edge, eremitism, exactingness, exactitude, exactness,
   exquisiteness, extremity, faithfulness, fasting, faultlessness,
   ferociousness, fidelity, fierceness, fineness, finicality,
   finicalness, finickiness, finickingness, firmness, flagellation,
   flawlessness, force, freezing point, freshness, frigidity,
   frostiness, fundamentalism, furiousness, fussiness, gelidity, grip,
   hairiness, hard knocks, hard life, hard lot, hardcase, hardness,
   hardship, harshness, iciness, impetuosity, impliability,
   inclemency, inexorability, inflexibility, inhospitableness,
   inhumanity, intense cold, intensity, intricacy, irritation,
   keenness, laboriousness, literalism, literality, literalness,
   low temperature, maceration, malignity, mathematical precision,
   mendicantism, mercilessness, meticulousness, mindlessness,
   minuteness, monachism, monasticism, mordacity, mordancy,
   mortification, murderousness, niceness, nicety, nip, nippiness,
   obduracy, obdurateness, obstinacy, onerousness, oppressiveness,
   orthodoxy, particularity, particularness, perfection, pitilessness,
   plight, poignancy, point, preciseness, precisianism, precision,
   predicament, pressure, punctilio, punctiliousness, punctuality,
   purism, puritanism, rawness, refinement, relentlessness, renitence,
   renitency, right, rightness, rigidity, rigidness, rigorism,
   rigorousness, roughness, ruggedness, savagery, scrupulosity,
   scrupulousness, sea of troubles, self-denial, self-mortification,
   severity, sharp air, sharpness, starchiness, sternness, stiffness,
   sting, strenuousness, stress, stress of life, strictness,
   stridency, stringency, stubbornness, subtlety, tartness, tautness,
   teeth, tenseness, tension, tensity, terrorism, textualism,
   the letter, tightness, toilsomeness, toughness, trenchancy, trial,
   tribulation, trouble, troubles, troublesomeness, unbendingness,
   uncompromisingness, ungentleness, unrelentingness, unyieldingness,
   vale of tears, vandalism, vehemence, venom, viciousness,
   vicissitude, violence, virulence, visitation, voluntary poverty

Rigor >> R Words
Rigor, definition of term: Rigor
rigor_pag1.html

Rigor Mortis >> R Words
Rigor Mortis, definition of term: Rigor Mortis
rigor+mortis_pag1.html

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