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OOO

American  

abbreviation

Business.

  1. out of office: (used as a notification to colleagues or clients when an employee is on vacation, out sick, or away from the office for another reason, and cannot be reached.)

Etymology

Origin of OOO

First recorded in 2000–05

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.