noun Chiefly British.
- strictness, severity, or harshness, as in dealing with people.
- the full or extreme severity of laws, rules, etc.
- severity of living conditions; hardship; austerity: the rigor of wartime existence.
- a severe or harsh act, circumstance, etc.
- scrupulous or inflexible accuracy or adherence: the logical rigor of mathematics.
- severity of weather or climate or an instance of this: the rigors of winter.
- Pathology. a sudden coldness, as that preceding certain fevers; chill.
- Physiology. a state of rigidity in muscle tissues during which they are unable to respond to stimuli due to the coagulation of muscle protein.
- Obsolete. stiffness or rigidity.
- med a sudden feeling of chilliness, often accompanied by shivering: it sometimes precedes a fever
- (ˈrɪɡə) pathol rigidity of a muscle; muscular cramp
- a state of rigidity assumed by some animals in reaction to sudden shock
- the inertia assumed by some plants in conditions unfavourable to growth
- harsh but just treatment or action
- a severe or cruel circumstance; hardshipthe rigours of famine
- strictness, harshness, or severity of character
- strictness in judgment or conduct; rigorism
- maths logic logical validity or accuracy
- obsolete rigidity
late 14c., from Old French rigor “strength, hardness” (13c., Modern French rigueur), from Latin rigorem (nominative rigor) “numbness, stiffness, hardness, firmness; roughness, rudeness,” from rigere “be stiff” (see rigid).
- Shivering or trembling, as caused by a chill.
- A state of rigidity in living tissues or organs that prevents response to stimuli.