2. Initialism. '''A'''rmy '''P'''ost '''O'''ffice ¹
3. Initialism. '''A'''ir Force '''P'''ost '''O'''ffice ¹
4. Adjective. (biochemistry of a protein) In an inactive, unbound state ¹
¹ Source: wiktionary.com
Definition of APO
1. a type of protein [n APOS] - See also: protein
Lexicographical Neighbors of APO
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