Definition

A five-sided polygon that geometry teachers love and students tolerate, but more importantly, the nickname for the massive five-sided building that houses the U.S. Department of Defense. When someone says "the Pentagon decided," they mean the military brass made a call, not that a geometric shape achieved sentience. It's the ultimate example of form following function, or maybe just a really committed geometry flex.

Example Usage

The Pentagon announced new cybersecurity protocols after the latest wave of infrastructure attacks.

Source: Military and geometric terminology via dictionary definition

Related Terms

Intermediate

Logistics Train

The succession of supply vehicles and support units moving resources from rear areas to forward combat units. The lifeline of any military force, because bullets and beans don't teleport themselves to the front lines.

🎖️ Military / Defense
Beginner

WARNO

Warning Order—a preliminary notice of an upcoming operation allowing subordinate units to begin preparations before receiving the full plan. The military's version of 'heads up, something's about to happen.'

🎖️ Military / Defense
Beginner

Standby

An order to wait and be ready for further instructions. It is the military's way of saying 'don't go anywhere, don't do anything, but be ready to do everything.' The ultimate test of patience, right behind waiting for the VA to process paperwork.

🎖️ Military / Defense
Advanced

materiel

Military equipment and supplies, spelled fancy with an extra 'e' to distinguish it from 'material' and confuse spell-checkers everywhere. Encompasses everything from ammunition to vehicles to MREs that taste like regret. The logistical backbone of any military operation, because even the best strategy fails if you run out of bullets.

🎖️ Military / Defense
Advanced

wheel

A tactical maneuver where a formation pivots around one end like a door swinging on hinges, changing facing direction while maintaining formation integrity. It's choreographed violence on a large scale.

🎖️ Military / Defense
Beginner

infiltrate

To secretly sneak into an organization, territory, or group where you're definitely not welcome—basically the tactical version of party-crashing. In military and intelligence contexts, it means penetrating enemy lines or organizations covertly, while in medicine it refers to unwanted substances sneaking into body tissues. The goal is always the same: get in undetected, whether you're a spy, a soldier, or a rogue cell.

🎖️ Military / Defense

Translate This Term

See “pentagon” in Corporate Speak, Gen-Z Slang, Pirate Speak, and more.

Try the Translator

Share This Term

Post on XShare on FacebookShare on LinkedIn

Discover a Term

Intermediate

blue-green deployment

A release strategy using two identical production environments where you switch traffic from the old version (blue) to t...