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English noun: Ac

1. Ac (substance) a radioactive element of the actinide series; found in uranium ores


Synonymsactinium, atomic number 89


Broader (hypernym)chemical element, element


Substance meronymuranium ore

2. AC (phenomenon) an electric current that reverses direction sinusoidally


SamplesIn the US most household current is AC at 60 cycles per second.


Synonymsalternating current, alternating electric current


Broader (hypernym)electrical energy, electricity


Antonymsdirect current, direct electric current, dc









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