Repolarization

Part of speech: noun

Definitions

1. The act of resetting the electrical state of a membrane to restore equilibrium after it has been disrupted by stimulation
2. A biological phenomenon that reinstitutes the original charge distribution across a membrane post-excitation
3. The process that restores a cell membrane's electrical potential back to its resting state following a depolarization event

Etymology: "Repolarization" is a plain technical formation: the prefix "re-", meaning "again" or "back", attached to "polarization". The "re-" comes from Latin, where it carried the same sense of repetition or return, and it reached English through Old French and Middle English. "Polarization" is the older word it attaches to, built on the idea of a pole, and in physiology the base sense is the electrical charge across a cell membrane. The compound follows the same logic as other English words that pair "re-" with a technical base. Where "polarization" names the state of a charged cell, "repolarization" names the return of that charge to its resting state after it has been disturbed. The word is a modern scientific coinage built from existing parts rather than a term with an ancient history of its own.