Толковый словарь английского языка - rigor

noun Etymology: Middle English rigour, from Anglo-French, from Latin ~, literally, stiffness, from rigēre to be stiff Date: 14th century 1. a. harsh inflexibility in opinion, temper, or judgment ; severity, the quality of being unyielding or inflexible ; strictness, severity of life ; austerity, an act or instance of strictness, severity, or cruelty, a tremor caused by a chill, a condition that makes life difficult, challenging, or uncomfortable, strict precision ; exactness , 5. rigidity, stiffness, rigidness or torpor of organs or tissue that prevents response to stimuli, ~ mortis