| Noun | 1. | Ds - a radioactive transuranic element chemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter |
| 2. | DS - the bureau in the State Department that is responsible for the security of diplomats and embassies overseas Department of State, DoS, State Department, United States Department of State, State - the federal department in the United States that sets and maintains foreign policies; "the Department of State was created in 1789" bureau, federal agency, government agency, agency, office, authority - an administrative unit of government; "the Central Intelligence Agency"; "the Census Bureau"; "Office of Management and Budget"; "Tennessee Valley Authority" | |
| 3. | DS - an honorary degree in science honorary degree, honoris causa - a degree conferred to honor the recipient |