WordNet (r) 3.0 (2006):
Ds n 1: a radioactive transuranic element [syn: darmstadtium, Ds, element 110, atomic number 110] 2: the bureau in the State Department that is responsible for the security of diplomats and embassies overseas [syn: Bureau of Diplomatic Security, DS] 3: an honorary degree in science [syn: Doctor of Science, DS, ScD]