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 双语律师Simon,毕业于亚洲一流的高级翻译学院,擅长翻译涉及金属和矿业领域的法律文件。