'Intestacy' definitions:

Definition of 'intestacy'

(from WordNet)
noun
The situation of being or dying without a legally valid will

Definition of 'Intestacy'

From: GCIDE
  • Intestacy \In*tes"ta*cy\, n. [From Intestate.] The state of being intestate, or of dying without having made a valid will. --Blackstone. [1913 Webster]