OOO

OOO

An initialism of "out of office," used in business communications when one is not present in their office or at their desk for some period of time. Variously written as "OoO" and "ooo." Enjoy your vacation! Make sure you set up your OOO email before you leave. Sorry, the agent who is handling your case is OoO at the moment, but I will ask her to contact you when she returns.
Farlex Dictionary of Idioms.
See also:
  • front office
  • the front office
  • apply for Chiltern Hundreds
  • hot desking
  • mail from some place
  • hang out one's shingle, to
  • (one's) blood is up
  • bite of the reality sandwich
  • reality
  • take a bite of the reality sandwich