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WordReference Random House Unabridged Dictionary of American English © 2024ne•per (nē′pər, nā′-),USA pronunciation n. [Physics.]- Physicsthe unit used to express the ratio of two amplitudes as a natural logarithm: equal to 8.68 dB. Abbr.: Np Also, napier.
- 1920–25; after J. Neper; see Napier
Ne•per (nā′pər),USA pronunciation n. - Biographical John. See Napier, John.
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