In this part: (1) Director The term “ Director ” means the Director of the National Science Foundation . (2) HBCU The term “ HBCU ” has the meaning given the term “part B institution” in section 1061 of title 20 . (3) Minority serving institution The term “ minority serving institution ” or “MSI” means Hispanic-Serving Institutions as defined in section 1101a) of title 20; Alaska Native Serving Institutions and Native Hawaiian-Serving Institutions as defined in section 1059d of title 20 ; and Predominantly Black Institutions, Asian American and Native American Pacific Islander-Serving Institutions, and Native American-Serving Nontribal Institutions as defined in section 1067q of title 20 . (4) TCU The term “ TCU ” has the meaning given the term “Tribal College or University” in section 1059c of title 20 . ( Pub. L. 117–167, div. B, title V, § 10526 , Aug. 9, 2022 , 136 Stat. 1627 .)