Reentrant

Reentrant or re-entrant can refer to:

• Reentrancy (computing) in computer programming
• Reentrant mutex in computer science
• Reentry (neural circuitry) in neuroscience
• Concave polygon, AKA reentrant polygon
• Reentry into the atmosphere of an orbiting body

• Re-entrant, a type of terrain feature commonly known as a draw.
• Salients, re-entrants and pockets in military tactics

• Reentrant dysrhythmia, a type of cardiac arrhythmia
• Reentrant tuning in music