Adjacent Words

ampere definitions

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WordNet (r) 3.0 (2005)

n
1: a former unit of electric current (slightly smaller than the SI ampere) [syn: ampere, international ampere]
2: the basic unit of electric current adopted under the Systeme International d'Unites; "a typical household circuit carries 15 to 50 amps" [syn: ampere, amp, A]

Merriam Webster's

noun Etymology: André-Marie Ampère Date: 1881 1. the practical meter-kilogram-second unit of electric current that is equivalent to a flow of one coulomb per second or to the steady current produced by one volt applied across a resistance of one ohm 2. the base unit of electric current in the International System of Units that is equal to a constant current which when maintained in two straight parallel conductors of infinite length and negligible circular sections one meter apart in a vacuum produces between the conductors a force equal to 2 × 10^-7 newton per meter of length

Oxford Reference Dictionary

n. Electr. the SI base unit of electric current. Usage: Symb.: A. Etymology: A. M. Ampère, Fr. physicist d. 1836

Webster's 1913 Dictionary

Ampere Am`p[`e]re" ([aum]N`p[^a]r"), Ampere Am*pere" ([a^]m*p[=a]r"), 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 amp[`e]re.

Webster's 1913 Dictionary

Ampere Am`p[`e]re" ([aum]N`p[^a]r"), Ampere Am*pere" ([a^]m*p[=a]r"), 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 amp[`e]re.

Collin's Cobuild Dictionary

Note: in BRIT, also use 'ampère' An ampere is a unit which is used for measuring electric current. The abbreviation amp is also used. N-COUNT