# ANSI Abbreviations for Scientific and Engineering Terms

## ANSI Y1.1-1972

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Term | Abbreviation |
---|---|

Absolute | abs |

Alternating current | ac |

Ampere-hour | amp hr |

Angstrom unit | A |

Antilogarithm | antilog |

Arithmetical average | aa |

Atmosphere | atm |

Atomic weight | at wt |

Avoirdupois | avdp |

Barometer | baro |

Board feet (feet board measure) | fbm |

Boiler pressure | bopress |

Boiling point | bp |

Brinell hardness number | Bhn |

British thermal unit | Btu or B |

Bushel | bu |

Calorie | cal |

Candle | cd |

Center to center | c to c |

Centimeter | cm |

Centimeter-gram-second (system) | cgs |

Chemical | chem |

Chemically pure | cp |

Circular | circ |

Circular mil | cmil |

Coefficient | coef |

Cologarithm | colog |

Concentrate | conc |

Conductivity | cndct |

Constant | const |

Cord | cd |

Cosecant | csc |

Cosine | cos |

Cost, insurance and freight | cif |

Cotangent | ctn |

Counter electromotive force | cemf |

Cubic | cu |

Cubic centimeter | cm^{3} or cc |

Cubic foot | ft^{3} or cu ft |

Cubic feet per second | ft^{3}/s or cfs |

Cubic inch | in^{3} or cu in |

Cubic meter | m^{3} or cu m |

Cubic millimeter | mm^{3} or cumm |

Cubic yard | yd^{3} or cu yd |

Current density | cd |

Cylinder | cyl |

Decibel | dB |

Degree | de or ^{o} |

Degree Centigrade | ^{o}C |

Degree Fahrenheit | ^{o}F |

Degree Kelvin | K |

Diameter | dia |

Direct current | dc |

Dozen | doz |

Dram | dr |

Efficiency | eff |

Electric | elec |

Electromotive force | emf |

Elevation | el |

Engine | eng |

Engineer | engr |

Engineering | engrg |

Equation | eq |

External | ext |

Fluid | fl |

Foot | ft |

Foot-candle | fc |

Foot-Lambert | fL or fl |

Foot per minute | fpm |

Foot per second | fps |

Foot-pound | ft lb |

Foot-pound-second (system) | fps |

Free on board | fob |

Freezing point | fp |

Frequency | freq |

Fusion point | fnpt |

Gallon | gal |

Gallon per minute | gpm |

Gallon per second | gps |

Grain | gr |

Gram | g |

Greatest common divisor | gcd |

High pressure | hp |

Horsepower | hp |

Horsepower-hour | hp hr |

Hour | h or hr |

Hyperbolic cosine | cosh |

Hyperbolic sine | sinh |

Hyperbolic tangent | tanh |

Inch | in |

Inch per second | in/s or ips |

Inch-pound | in lb |

Indicated horsepower-hour | iph |

Intermediate pressure | ip |

Internal | intl |

Kilovolt-ampere/hour | KVA-h or kVah |

Kilowatt-hour meter | kwhm |

Latitude | lat |

Least common multiple | lcm |

Liquid | liq |

Logarithm (common) | log |

Logarithm (natural) | ln |

Low pressure | lp |

Lumen per watt | lm/W or lpw |

Magnetomotive force | mmf |

Mathematics (ical) | math |

Maximum | max |

Mean effective pressure | mep |

Melting point | mp |

Meter | m |

Meter-kilogram-second | mks |

Microfarad | μF |

Mile | mi |

Mile per hour | mi/h or mph |

Milliampere | mA |

Minimum | min |

Molecular weight | mol wt |

Molecule | mo |

National Electric Code | NEC |

Ounce | oz |

Ounce-inch | oz in |

Pennyweight | dwt |

Pint | pt |

Potential difference | pd |

Pound | lb |

Pound-force foot | lb_{f} ft or lb ft |

Pound-force inch | lb_{f} in or lb in |

pound-force per square foot | lb_{f}/ft^{2} or psf |

pound-force per square inch | lb_{f}/in^{2} or psi |

pound per horsepower | lb/hp or php |

Powerfactor | pf |

Quart | qt |

Reactive volt-ampere meter | rva |

Revolution per minute | r/min or rpm |

Revolution per second | r/s or rps |

Root mean square | rms |

Round | rnd |

Secant | sec |

Second | s or sec |

Sine | sin |

Specific gravity | sp gr |

Specific heat | sp ht |

Square | sq |

Square centimeter | cm^{2} or sq cm |

Square foot | ft^{2} or sq ft |

Square inch | in^{2} or sq in |

Square kilometer | km^{2} or sq km |

Square root of mean square | rms |

Standard | std |

Tangent | tan |

Temperature | temp |

Tensile strength | ts |

Versed sine | vers |

Volt | V |

Watt | W |

Watthour | Wh |

Week | wk |

Weight | wt |

Yard | yd |

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