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What does IO stand for?

IO stands for Insignificant Other

This definition appears somewhat frequently and is found in the following Acronym Finder categories:

  • Slang/chat, popular culture

See other definitions of IO

Other Resources:
We have 16 other meanings of IO in our Acronym Attic

Samples in periodicals archive:

Stephen McCauley's fans are known to look forward to his next novel with anticipation, and it's a pleasure to say that his sixth novel, Insignificant Others, is well worth the wait.
On Friday, March 11 the party comes to Liverpool's baby cream at the Albert Dock, from 8pm till late and the hot house duo Insignificant Others (Skyline Records) will be providing the sound track with their super cool electro funky house.