Englishfor English speakers
(Z8/E8)-12 Ac
z
Noun
—
Z is the twenty-sixth (26th), and last letter of the alphabet.
"z" comes after "y"
Ac
—
noun
(= actinium)
a radioactive element of the actinide series; found in uranium ores
AC
—
noun
an electric current that reverses direction sinusoidally
In the US most household current is AC at 60 cycles per second