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 Englisch Thesaurus
observation ['ɔbzə'veɪʃ(ə)n] Abk.
Abkürz. obbo; observ; obsv
Abkürz., Mil. obsn; obsr
Mil., Logist. The condition of weather and terrain that permits a force to see the friendly, enemy, and neutral personnel and systems, and key aspects of the environment. (FRA)