OO
Updated: 01/31/2023 by Computer Hope
OO may refer to any of the following:
1. OO is an acronym for object-oriented.
2. Acronym for OpenOffice, also abbreviated as OOo, which is short for OpenOffice.org.
Note
OOO (three o's) is also short for out of office.
3. In chat, as another way of saying "oh," oo could also be extended to Oooo...