DIA n 1: an intelligence agency of the United States in the Department of Defense; is responsible for providing intelligence in support of military planning and operations and weapons acquisition [syn: {Defense Intelligence Agency}, {DIA}]
Dia- \Di"a-\, Di- \Di-\ . [Gr. dia` through; orig., dividing into two parts; akin to ? two. See {Two}, and cf. 1st {Di-}.] A prefix denoting through; also, between, apart, asunder, across. Before a vowel dia- becomes {di-}; as, diactinic; dielectric, etc. [1913 Webster]
DIA Deutsche Informatik Akademie (org.)
DIA Document Interchange Architecture (IBM, CCS)