A white, radioactive, metallic chemical element, the first member of the actinide series, found in pitchblende and other minerals or formed in reactors by the neutron irradiation of radium: symbol, Ac; at. no. 89
An electric current that repeatedly changes its direction or strength, usually at a certain frequency or range of frequencies. The term is also used to describe alternating voltages. Power stations generate alternating current because it is easy to raise and lower the voltage of such current using transformers; thus the voltage can be raised very high for transmission (high voltages lose less power as heat than do low voltages), and lowered to safe levels for domestic and industrial use. In North America, the frequency of alternation of the direction of flow is 60 Hz, or 60 cycles per second. In other parts of the world it is 50 Hz.
an electric current that reverses direction sinusoidally
a radioactive element of the actinide series; found in uranium ores
Find another word for ac. In this page you can discover 12 synonyms, antonyms, idiomatic expressions, and related words for ac, like: actinium, -ad-, alternating current, alternating electric current, atomic number 89, r/c, a-c, c/c++, gs, tc and sc.