Englishfor English speakers
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
measurement
Noun
—
Measurement is the act of something.
—
Measurement is the amount of something which is found by measuring it.
The measurement of flour you need is four cups.