• What does O.S. Stand For in Internet Slang, Chat Texting & Subculture ?

  For O.S. we have found 6 definitions.

• What does O.S. mean? We know 6 definitions for O.S. abbreviation or acronym in 2 categories. Possible O.S. meaning as an acronym, abbreviation, shorthand or slang term vary from category to category. Please look for them carefully.

O.S. Stands For: