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half-cell

[haf-sel, hahf-]
noun Electricity.
  1. a single electrode, generally a metal, immersed in a container filled with an electrolyte, and having a specific electrical potential for a given combination of electrode and electrolyte.
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Origin of half-cell

First recorded in 1935–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018