WordReference Random House Unabridged Dictionary of American English © 2026
ac′tion poten′tial, [Physiol.]
- Physiologythe change in electrical potential that occurs between the inside and outside of a nerve or muscle fiber when it is stimulated, serving to transmit nerve signals. Cf. nerve impulse.
- 1925–30
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'action potential' also found in these entries (note: many are not synonyms or translations):
