definitions

sodium pump

noun

an energy-consuming mechanism in cell membranes that transports sodium ions across the membrane, in exchange for potassium ions or other substances.

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Nearby words

sodium perborate, sodium peroxide, sodium phosphate, sodium polysulfide, sodium propionate, sodium pump, sodium pyroborate, sodium salicylate, sodium silicate, sodium sulfate, sodium sulfide

Origin of sodium pump

First recorded in 1960–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for sodium pump

sodium pump

n.

A biologic mechanism that uses metabolic energy stored in ATP to achieve active transport of sodium ions across a membrane, such as the cell membrane or the multicellular membranes that make up the walls of renal tubules.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.