al·ter·nat·ing current (ôltər-nā′tĭng, ăl-)
n. Abbr. AC
An electric current that reverses direction in a circuit at regular intervals.
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
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