Chapter 1. General Provisions of California Probate Code >> Division 11. >> Part 6. >> Chapter 1.

This part shall apply to property passing by will through a decedent's estate or by a trust, as defined in Section 82, that becomes irrevocable only on the death of the settlor.

(a) For purposes of this part, "decedent's testamentary instruments" means the decedent's will or revocable trust.
  (b) "Estate" as used in this part shall include a decedent's probate estate and all property held in any revocable trust that becomes irrevocable on the death of the decedent.