A/O
American
Or
a/o
-
account of.
-
and others.
AO
1
British
abbreviation
A/O
2
British
abbreviation
ao
3
British
abbreviation
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.