• word of the day

    ac

    ac - Dictionary definition and meaning for word ac

    Definition
    (noun) a radioactive element of the actinide series; found in uranium ores
    Synonyms : actinium , atomic number 89
    Definition
    (noun) an electric current that reverses direction sinusoidally
    Example Sentence
    • In the US most household current is AC at 60 cycles per second
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