'Diathesis' definitions:

Definition of 'diathesis'

From: WordNet
noun
Constitutional predisposition to a particular disease or abnormality

Definition of 'Diathesis'

From: GCIDE
  • Diathesis \Di*ath"e*sis\, n. [NL., fr. Gr. ?, fr. ? to place separately, arrange; dia` through, asunder + ? to place, put.] (Med.) Bodily condition or constitution, esp. a morbid habit which predisposes to a particular disease, or class of diseases. [1913 Webster]