As used in this subchapter—

(a) The term “mortgage” means 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; or (2) under a lease having a period of not less than fifty years to run from the date the mortgage was executed; and the term “first mortgage” means such classes of first liens as are commonly given to secure advances on, or the unpaid purchase price of, real estate, under the laws of the State in which the real estate is located, together with the credit instruments, if any, secured thereby.

(b) The term “mortgagee” includes the original lender under a mortgage, and his successors and assigns approved by the Secretary; and the term “mortgagor” includes the original borrower under a mortgage and his successors and assigns.

(c) The term “maturity date” means the date on which the mortgage indebtedness would be extinguished if paid in accordance with periodic payments provided for in the mortgage.

(d) The term “State” includes the several States, and Puerto Rico, the District of Columbia, Guam, and the Virgin Islands.

(June 27, 1934, ch. 847, title VI, §601, as added Mar. 28, 1941, ch. 31, §1, 55 Stat. 55; amended Apr. 20, 1950, ch. 94, title I, §122, 64 Stat. 59; July 14, 1952, ch. 723, §10(a)(2), 66 Stat. 603; Pub. L. 86–70, §10(a), June 25, 1959, 73 Stat. 142; Pub. L. 86–624, §6, July 12, 1960, 74 Stat. 411; Pub. L. 90–19, §1(a)(3), May 25, 1967, 81 Stat. 17.)

**1967**—Subsec. (b). Pub. L. 90–19 substituted “Secretary” for “Commissioner”.

**1960**—Subsec. (d). Pub. L. 88–624 struck out “Hawaii,” before “Puerto Rico”.

**1959**—Subsec. (d). Pub. L. 86–70 struck out “Alaska,” before “Hawaii”.

**1952**—Subsec. (d). Act July 14, 1952, inserted “Guam,” after “District of Columbia,”.

**1950**—Act Apr. 20, 1950, substituted “Commissioner” for “Administrator” wherever appearing.

Section 9 of act Mar. 28, 1941 provided that: “If any provision of this Act [enacting sections 1736 to 1742 of this title, and section 609k of Title 15, Commerce and Trade, and amending sections 371, 1430, 1702, 1706, 1707, 1713, and 1715, 1716, 1717 of this title] or the application thereof to any person or circumstances, is held invalid, the remainder of the Act, and the application of such provision to other persons or circumstances, shall not be affected thereby.”