The Meaning of OSO – OSO means “Other Significant Other“. It is an internet acronym. What does OSO mean? OSO is an abbreviation that stands for “Other Significant Other”. Check the content shared below on this page to find out OSO definition and all the information related to acronym OSO in FAQ format.

What does OSO mean?

OSO is an acronym, abbreviation or slang word which means “Other Significant Other”. It is used during chats and online conversations on forums, social networking sites and chat rooms.

The Meaning of OSO

OSO means “Other Significant Other”.

What is OSO?

OSO is “Other Significant Other”.

OSO Definition / OSO Means

The definition of OSO is “Other Significant Other”.

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