plural of second five-eighth

(informal) A period of intense conflict between the two Koreas in the 1960s, that included the attempted assassination of the South Korean president and the capture of the U.S.S. Pueblo by North Korea.

(Canada, Navy) A non-commissioned officer in the Canadian Forces Maritime Command, ranking above master seaman and below petty officer first class.

plural of petty officer second class

A child of a second cousin. / A second cousin of a parent.

(logic) A formal deductive system which extends first-order logic by the ability to quantify over unary predicates over individual members of the universe of discourse.

(music, historical, US) A group of classical-music composers who lived during the late-19th and early-20th centuries in New England, based in and around Boston, Massachusetts.

(history, uncommon) World War II defined as starting from the Manchurian Incident of September 18, 1931 to Imperial Japan’s surrender in September 1945.

plural of second cousin once removed

plural of monadic second-order logic