diathesis

1. (medicine) A hereditary or constitutional predisposition to a disease or other disorder.Examples: "Medical materialism seems indeed a good appellation for the too simple-minded system of thought which we are considering. […] All such mental over-tensions, it says, are, when you come to the bottom of the matter, mere affairs of diathesis (auto-intoxications most probably), due to the perverted action of various glands which physiology will yet discover."; "When a coal miner developed the eye disease nystagmus, was this to be diagnosed as due to work conditions or to an inherent constitutional diathesis?"countableuncountable

2. (grammar) Voice (active or passive).countableuncountable