noun
District of Columbia; DC
Official Japanese designation for the U.S. federal district; used in formal and news contexts.
コロンビア特別区はアメリカ合衆国の首都です。
The District of Columbia is the capital of the United States.
Common abbreviation; コロンビア特別区 is the formal full name.
From English 'District of Columbia', with 特別区 (special district) used as a translation.