System unit
Defined in 1 dictionary — U.S. Code
United States Code
16 U.S.C. § 3502 — for purposes of this chapter (4 versions over time)
The term "System unit" means any undeveloped coastal barrier, or combination of closely-related undeveloped coastal barriers, included within the John H. Chafee Coastal Barrier Resources System established under section 3503(a) of this title.