(n) the basic unit of electric current adopted under the Systeme International d'Unites, Syn.A, amp, Example: a typical household circuit carries 15 to 50 amps
(n) a unit of magnetomotive force equal to the magnetomotive force produced by the passage of 1 ampere through 1 complete turn of a coil; equal to 1.257 gilberts
(n) a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression, Syn.pep pill, upper, speed
n. [ L. ampelitis, Gr. 'ampeli^tis, fr. 'a`mpelos vine. ] (Min.) An earth abounding in pyrites, used by the ancients to kill insects, etc., on vines; -- applied by Brongniart to a carbonaceous alum schist. [ 1913 Webster ]
{ ‖ } n. [ From the name of a French electrician. ] (Elec.) The unit of electric current; -- defined by the International Electrical Congress in 1893 and by U. S. Statute as, one tenth of the unit of current of the C. G. S. system of electro-magnetic units, or the practical equivalent of the unvarying current which, when passed through a standard solution of nitrate of silver in water, deposits silver at the rate of 0.001118 grams per second. Called also the international ampère. [ 1913 Webster ]
. (Elec.) A unit, employed in calculating fall of pressure in distributing mains, equivalent to a current of one ampère flowing through one foot of conductor. [ Webster 1913 Suppl. ]
. (Elec.) The quantity of electricity delivered in hour by a current whose average strength is one ampère. It is used as a unit of charge quantity; the Ampere hour is equal to 3600 coulombs. The terms and are sometimes similarly used. [ Webster 1913 Suppl. ]
. (Elec.) A unit of magnetomotive force equal to the product of one complete convolution (of a coiled conductor) into one ampère of current; thus, a conductor having five convolutions and carrying a current of half an ampère is said to have 21/2ampère turns. The magnetizing effect of a coil is proportional to the number of its ampère turns. [ Webster 1913 Suppl. ]
n. [ A corruption of and, per se and, i. e., & by itself makes and. ] A word used to describe the character &unr_;, &unr_;, or &. Halliwell. [ 1913 Webster ]
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