In this subchapter:

((1)) ** Department** The term “Department” means the Department of Energy.

((2)) ** Exascale computing** The term “exascale computing” means computing through the use of a computing machine that performs near or above 10 to the 18th power operations per second.

((3)) ** High-end computing system** The term “high-end computing system” means a computing system with performance that substantially exceeds that of systems that are commonly available for advanced scientific and engineering applications.

((4)) ** Leadership System** The term “Leadership System” means a high-end computing system that is among the most advanced in the world in terms of performance in solving scientific and engineering problems.

((5)) ** Institution of higher education** The term “institution of higher education” has the meaning given the term in .section 1001(a) of title 20

((6)) ** Secretary** The term “Secretary” means the Secretary of Energy.