Scientific and Engineering Terms - ANSI Abbreviations
Abbreviations for Use on Drawings and in Text - ANSI Y1.1-1972. A comprehensive reference table of scientific and engineering term abbreviations used in technical documentation and drawings.
| 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 | cm3 or cc |
| Cubic foot | ft3 or cu ft |
| Cubic feet per second | ft3/s or cfs |
| Cubic inch | in3 or cu in |
| Cubic meter | m3 or cu m |
| Cubic millimeter | mm3 or cumm |
| Cubic yard | yd3 or cu yd |
| Current density | cd |
| Cylinder | cyl |
| Decibel | dB |
| Degree | de or o |
| Degree Centigrade | oC |
| Degree Fahrenheit | oF |
| 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 (unit of work or mechanical energy) | 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 (torque unit) | lbf ft or lb ft |
| Pound-force inch (torque unit) | lbf in or lb in |
| pound-force per square foot | lbf/ft2 or psf |
| pound-force per square inch | lbf/in2 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 | cm2 or sq cm |
| Square foot | ft2 or sq ft |
| Square inch | in2 or sq in |
| Square kilometer | km2 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 |