OSS, the /ˌəʊ es ˈes/ abbreviation for
the Office of Strategic Services; a former US government department established in 1942 to collect information about other countries, especially secretly. It was replaced by the CIA in 1947.

[TahlilGaran] Dictionary of Contemporary English ▲

OSS
Office of Strategic Services 
Oh Shoot Situation (polite form) 
Open Source Software

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