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4 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

electric current \electric current\, electrical current \electrical current\, the movement of electrically charged particles, atoms, or ions, through solids, liquids, gases, or free space; the term is usually used of relatively smooth movements of electric charge through conductors, whether constant or variable. Sudden movements of charge are usually referred to by other terms, such as {spark} or {lightning} or {discharge}. In metallic conductors the electric current is usually due to movement of electrons through the metal. The current is measured as the rate of movement of charge per unit time, and is counted in units of amperes. As a formal definition, the direction of movement of electric current is considered as the same as the direction of movement of positive charge, or in a direction opposite to the movement of negative charge. Electric current may move constantly in a single direction, called {direct current} (abbreviated {DC}), or may move alternately in one direction and then the opposite direction, called {alternating current} (abbreviated {AC}). [PJC]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Ac \Ac\ n.

1. the chemical symbol for {actinum}, a radioactive element.

Syn: actinium [WordNet 1.5]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

AC \AC\ n. [Acronym from alternating current.] an electric current that reverses direction sinusoidally. Alternative to {direct curent}, {DC}. [acron.]

Syn: alternating current [WordNet 1.5]

From WordNet (r) 3.0 (2006) [wn]:



1: a radioactive element of the actinide series; found in uranium ores [syn: {actinium}, {Ac}, {atomic number 89}]

2: an electric current that reverses direction sinusoidally; "In the US most household current is AC at 60 cycles per second" [syn: {alternating current}, {AC}, {alternating electric current}] [ant: {DC}, {direct current}, {direct electric current}]

Definitions retrieved from the Open Source DICT dictionary. Click here for database copyright information.