MIA /ˌem aɪ ˈeɪ/ noun [countable]
American English (missing in action) a soldier who has disappeared in a battle and who may still be alive:
There are still more than 500 MIAs.

[TahlilGaran] Dictionary of Contemporary English ▲

MIA
Missing In Action
According to some people in the United States there are still some MIA soldiers in Vietnam.

[TahlilGaran] English Idioms Dictionary ▲

MIA
Made in America 
Misfits in Action (World Championship Wrestling) 
Missing In Action

[TahlilGaran] Acronyms and Abbreviations Dictionary ▲

MIA
Marine Insurance Act

[TahlilGaran] Acronyms and Abbreviations Dictionary ▲