defense commissary agencyglossary / DEFENSE COMMISSARY AGENCY Defense Commissary Agency. An agency in the U.S. Department of Defense responsible for providing goods and services to members of the armed forces at reduced prices. — Abbr. DeCA. 词条贡献者 译员黎川,在一家顶尖澳洲律师事务所的上海办公室担任全职法律翻译,擅长翻译涉及工业与制造业领域的法律文件。