What is "thromde"

A thromde ( Dzongkha: ཁྲོམ་སྡེ་; Wylie: khrom-sde) is a third-level administrative division in Bhutan. The legal administrative status of thromdes was most recently codified under the Local Government Act of 2009, and the role of thromdes in elections in Bhutan was defined in the Election Act of 2008.