mike-mike

Definition

Military slang for millimeter, typically used when referring to caliber sizes of weapons or ammunition. Because saying 'fifty caliber' apparently requires too much oxygen during combat operations.

Example Usage

We've got enemy contact at 200 meters, requesting fire support with the two-forty mike-mike.

Origin

Phonetic alphabet convention where 'M' is pronounced 'Mike,' doubled to represent 'mm' abbreviation

Fun Fact

The term became so ingrained in military culture that veterans often catch themselves using it years after service when discussing anything measured in millimeters.

Source: U.S. military phonetic alphabet and field terminology

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