膜まく電でん位いまくでんいMeanings1nounmembrane potentialTechnical term in biology and physiology; refers to the voltage difference across a cell membrane.神しん経けい細さい胞ぼうの膜まく電でん位いが変へん化かすると、活かつ動どう電でん位いが発はっ生せいする。When the membrane potential of a neuron changes, an action potential is generated.