A.P.O.

Army & Air Force Post Office.

Also, APO.

* * *

apo-,

prefix.

1. from; away; quite; off, as in apostasy, apocalypse.

2. (especially in modern scientific terms) standing off or away from each other; detached; separate: »

Aposepalous = having separate sepals.

Also, ap- before vowels and h.

╂[< Greek apo- < apó off]

APO (no periods) or A.P.O.,

Army Post Office.