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American Automobile Manufacturers Association (AAMA)

A trade association of Chrysler, Ford, and General Motors that sponsors research, disseminates information, and lobbies on behalf of the American automotive industry in the United States.

American City Racing League

A racing series sanctioned by the Sports Car Club of America (SCCA) for three-car teams representing specific cities and running 2000 spec cars with 2.0 liter Ford engines.

American Hot Rod Association (AHRA)

A drag-racing sanctioning body that is no longer in existence.

American International Automobile Dealers Association (AIADA)

An association of auto dealers and their employees who sell and service automobiles manufactured in the United States and abroad.

American National Standards Institute (ANSI)

A privately funded organization that promotes uniform standards in such areas as measurements.

American Petroleum Institute (API)

A petroleum-industry lobbying and public information group.

American Society Of Mechanical Engineers (ASME)

An association to which mechanical engineers can belong. Through ASME, members can keep current on new technologies and procedures in the engineering field.

American Society Of Test Engineers (ASTE)

An association to foster improved communications among those involved in the testing industry.

American Society Of Testing And Materials (ASTM)

A professional organization to develop and promote standards for products, materials, systems, and services.

American Trucking Association (ATA)

A national federation of commercial trucking associations.

American Wire Gauge (AWG)

A standard for the measurement of the size of wire. The higher the gauge number, the smaller the wire.

AMM

Air Mass Meter.

Ammeter

An instrument used to determine the amount of amperage (current draw) in a circuit [1] by connecting the ammeter in series with the circuit and measuring the total number of electrons flowing in the circuit or [2] by using an inductive probe that measures the strength of the magnetic field that is created by the current flowing through the wire.

Ammeter Shunt

A low-resistance conductor used to increase the range of an ammeter. It is shunted (placed in parallel) across the ammeter movement and carries the majority of the current.

Amortization

Loan payment calculated to pay off the debt at the end of a fixed period, including interest on the outstanding balance.

Amp

An abbreviation for ampere.

Amp/hour

Amperes per hour; a standard measure for a rate of current flow.

Ampacity

The current-carrying capacity of conductors or equipment, expressed in amperes.

Amperage

The amount of current, expressed in amperes.

Amperage Capacity

An indication of the length of time a battery can produce an amperage, or the amount of amperage that a battery can produce before being discharged.