What does IO stand for?

The list of IO abbreviation meanings.

Stands For|301Abbreviated As|0Related|0
62
Information Operations(Army, Military)
35
In order
26
Input-Output
24
Input and Output
16
Inside-Out
15
International Organizations
13
International Office
13
Industrial Organization
11
Industrial Organizational
9
Input/Output, Inc.
8
Indirect Object
8
Intermon Oxfam
7
Information Objects
7
International Organization(Government, Telecommunications, Military)
7
Input/Output(Computing Science, Engineering, Computer Science)
7
Improv Olympic
6
Information Organization
6
International Operations
6
Investigating Officer(Military law, Military)
6
Immediate Office(Science)
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APASmart Define. (2017). io. Retrieved September 22, 2026, from http://smartdefine.org/io/abbreviations/f
ChicagoSmart Define. 2017. "io" http://smartdefine.org/io/abbreviations/f (accessed September 22, 2026).
HarvardSmart Define 2017, io, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/io/abbreviations/f>.
MLASmart Define. "io" 21 December 2017. Web. 22 September 2026. <http://smartdefine.org/io/abbreviations/f>