Scientific and Engineering Terms - ANSI Abbreviations

Abbreviations for Use on Drawings and in Text - ANSI Y1.1.

Abbreviations for Use on Drawings and in Text, ANSI Y1.1 - 1972:

Scientific and Engineering Terms - ANSI Abbreviations
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)	lb_f ft or lb ft
Pound-force inch (torque unit)	lb_f in or lb in
pound-force per square foot	lb_f/ft² or psf
pound-force per square inch	lb_f/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