Definition

An arrangement of soldiers in close formation with overlapping shields, or more modernly, a ship-based defensive system that's basically automated paranoia. Originally ancient Greek military formation.

Example Usage

The Phalanx system on the destroyer automatically defends against incoming missiles with rotating gatling guns.

Origin

Ancient Greek military term; revived for modern weapons systems

Fun Fact

The modern Phalanx CIWS (Close-In Weapon System) fires 4,500 rounds per minute, which is faster than you can follow with your eyes.

Source: Military History and Modern Naval Weapons Systems

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