### Question
What is the definition of mortgage?


### Answer
The definition of **mortgage** is as follows in *12 U.S.C. § 1736*:

> a first mortgage on real estate, in fee simple, or on a leasehold (1) under a lease for not less than ninety-nine years which is renewable

#### Citation:
  - *12 U.S.C. § 1736*
  - Heading: **CHAPTER 13-NATIONAL HOUSING > SUBCHAPTER VI-WAR HOUSING INSURANCE**

