say it: AHR-duh
arda is a noun meaning "an agency of the Intelligence Community that conducts advanced research and development related to information technology". It carries one recorded sense.
an agency of the Intelligence Community that conducts advanced research and development related to information technology
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for arda come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.