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CAS Standard Abbreviations

Listing A: Terms to Abbreviations | Listing B: Abbreviations to Terms

Listing A: Terms to Abbreviations

Standard Abbreviations, Acronyms, Special Characters, and Symbols in CAS Computer-Readable Files and Publications. Chemical Abstracts Service, 1993. Reproduced for educational purposes with permission from CAS, a Division of the American Chemical Society.

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Full Term Abbreviation
absolute abs.
abstract abstr.
(#)addition addn.
additional(ly) addnl.
adenosine 5'-diphosphate ADP
adenosine 5'-monophosphate AMP
adenosine triphosphatase ATPase
adenosine 5'-triphosphate ATP
adrenocorticotropin ACTH
(#)alcohol(ic) alc.
(#)aliphatic aliph.
alkaline alk.
alkalinity(*) alky.
all valence electron AVE
alternating current a.c.
amount amt.
ampere (unit) A
(#)analysis(*) anal.
(#)analytical(ly) anal.
angstrom unit Å(**)
anhydrous anhyd.
apparatus app.
approximate(ly) approx.
approximation approxn.
(#)aqueous aq.
(#)aromatic arom.
associate assoc.
associated assocd.
associating assocg.
(#)association assocn.
asymmetric(al)(ly) asym.
atmosphere (unit) atm
atmospheric atm.
(#)atomic at.
atomic mass unit amu
atomic orbital AO
augmented plane wave APW
average av.
Full Term Abbreviation
Bardeen-Cooper-Schrieffer BCS
barrel (unit) bbl
becquerel (unit) Bq
billion electron volts (unit) GeV
biochemical oxygen demand BOD
body centered cubic bcc.
Bohr magneton (unit) mB(**)
boiling point b.p.
British thermal unit Btu
bushel (unit) bu
butyl (normal) Bu
Full Term Abbreviation
(#)calculate calc.
(#)calculated calcd.
(#)calculating calcg.
(#)calculation calcn.
calorie (unit) cal.
carboxymethyl cellulose CM-cellulose
(#)chemical(ly) chem.
chemical oxygen demand COD
chemically pure CP
(#)chemistry chem.
circular dichroism CD
(#)clinical(ly) clin.
coefficient coeff.
(#)coenzyme A CoA
coherent potential approximation CPA
commercial(ly) com.
complete neglect of differential CNDO
composition compn.
compound compd.
concanavalin A ConA
(#)concentrate conc.
(#)concentrated concd.
(#)concentrating concg.
(#)concentration concn.
(#)conductivity(*) cond.
configuration interaction CI
constant const.
containing contg.
corrected cor.
coulomb (unit) C
coupled electron pair approximation CEPA
(#)critical crit.
(#)crystalline cryst.
(#)crystallization crystn.
(#)crystallized crystd.
(#)crystallizing crystg.
cubic feet per minute (unit) cfm
curie (unit) Ci
current density c.d.
cyclic AMP cAMP
cyclic GMP cGMP
cytidine 5'-diphosphate CDP
cytidine 5'-monophosphate CMP
cytidine 5'-triphosphate CTP
Full Term Abbreviation
debye unit D
decompose decomp.
decomposed decompd.
decomposing decompg.
(#)decomposition decompn.
(#)degradation degrdn.
degree Celsius centigrade (unit) °C(**)
degree Fahrenheit (unit) °F(**)
degree Kelvin K
degree of polymerization d.p.
density d.
deoxyribonuclease DNase
deoxyribonucleic acid DNA
derivative deriv.
(#)determination detn.
determine det.
(#)determined detd.
determining detg.
diameter diam.
diatomics-in-molecules DIM
diethylaminoethyl cellulose DEAE-cellulose
differential thermal analysis DTA
dilute dil.
diluted dild.
diluting dilg.
dilution diln.
dimethylformamide DMF
dimethyl sulfoxide DMSO
diphosphopyridine nucleotide NAD
direct current d.c.
disintegrations per minute (unit) dpm
dissociate dissoc.
dissociated dissocd.
dissociating dissocg.
(#)dissociation dissocn.
(#)distillation distn.
(#)distilled distd.
(#)distilling distg.
Full Term Abbreviation
effective dose ED
(#)electric(al)(ly) elec.
electrocardiogram ECG
electroencephalogram EEG
electromagnetic unit emu
electromotive force emf.
electron paramagnetic resonance ESR (This must be a typo in the original)
electron spin resonance ESR
electron volt (unit) eV
electrostatic unit esu
enzyme-linked immunosorbent assay ELISA
(#)equilibrium(s) equil.
equivalent (unit) equiv
(#)equivalent equiv.
especially esp.
estimate est.
estimated estd.
estimating estg.
estimation estn.
ethyl Et
ethylenediaminetetraacetic acid EDTA
evaporate evap.
evaporated evapd.
evaporating evapg.
evaporation evapn.
(#)examination examn.
(#)examined examd.
(#)examining examg.
experiment expt.
experimental(ly) exptl.
extended Hueckel molecular orbital EHMO
extract ext.
extracted extd.
extracting extg.
(#)extraction extn.
Full Term Abbreviation
face centered cubic fcc.
farad (unit) F
fermentation fermn.
flavin adenine dinucleotide FAD
flavin mononucleotide FMN
floating spherical Gaussian orbital FSGO
foot (unit) ft
foot-pound (unit) ft-lb
follicle-stimulating hormone FSH
freezing point f.p.
Full Term Abbreviation
gallon (unit) gal
gauss (unit) G
Gaussian-type orbital GTO
gram (unit) g
gravitational constant g
gray (absorbed radiation dose) (unit) Gy
guanosine 5'-diphosphate GDP
guanosine 5'-monophosphate GMP
guanosine 5'-triphosphate GTP
Full Term Abbreviation
hectare ha
henry H
(#)hemoglobin Hb
hertz (cycles/sec) (unit) Hz
hexagonal close-packed hcp
highest occupied molecular orbital HOMO
hour (unit) h
Hueckel molecular orbital HMO
hundredweight (unit) cwt
hydrogenic atoms in molecules HAM
Full Term Abbreviation
immunoglobulin Ig
inch (unit) in.
independent electron pair approximation IEPA
infrared IR
inhibitory dose ID
inosine 5'-diphosphate IDP
inosine 5'-monophosphate IMP
inosine 5'-triphosphate ITP
intermediate neglect of differential overlap INDO
international unit IU
interstitial cell-stimulating hormone ICSH
intramuscular(ly) i.m.
intraperitoneal(ly) i.p.
intravenous(ly) i.v.
(#)irradiation irradn.
iterative extended Hueckel molecular orbital IEHMO
Full Term Abbreviation
joule (unit) J
Full Term Abbreviation
kelvin (unit) K
Full Term Abbreviation
laboratory lab.
lethal dose LD
linear combination of atomic orbitals LCAO
linear combination of fragment configuration LCFC
liquid liq.
liter (unit) L
low energy electron diffraction LEED
lowest unoccupied molecular orbital LUMO
lumen (unit) lm
luteinizing hormone LH
lux (unit) lx
Full Term Abbreviation
magnetohydrodynamics MHD
manufacture manuf.
manufactured manufd.
manufacturing manufg.
mathematical(ly) math.
maximum(s) max.
maxwell (unit) Mx
(#)mechanical(ly) mech.
melanocyte-stimulating hormone MSH
melting at m.
melting point m.p.
melts at m.
messenger RNA mRNA
metabolism metab.
meter (unit) m
methyl Me
mile (unit) mi
miles per hour (unit) mph
minimum(s) min.
minute (unit) min
miscellaneous misc.
(#)mixture mixt.
modified neglect of diatomic overlap MNDO
molal (unit) m
molar (unit) M
mole (unit) mol
(#)molecular mol.
molecular orbital MO
(#)molecule mol.
molecules-in-molecules MIM
month (unit) mo
multiconfigurational self-consistent field MC-SCF
Full Term Abbreviation
negative(ly) neg.
neglect of diatomic differential overlap NDDO
neglect of nonbonded differential overlap NNDO
nicotinamide adenine dinucleotide NAD
nicotinamide adenine dinucleotide phosphate NADP
nicotinamide mononucleotide NMN
nuclear magnetic resonance NMR
nuclear quadrupole resonance NQR
number no.
Full Term Abbreviation
observed obsd.
oersted (unit) Oe
ohm (unit) W(**)
optical rotatory dispersion ORD
(#)organic org.
ounce (unit) oz
(#)oxidation oxidn.
Full Term Abbreviation
Pariser-Parr-Pople PPP
partial neglect of differential overlap PNDO
parts per billion (unit) ppb
parts per million (unit) ppm
pascal (unit) Pa
perturbational molecular orbital PMO
phenyl Ph
(#)physical(ly) phys.
pint (unit) pt
poise (unit) P
(#)polymerization polymn.
(#)polymerized polymd.
(#)polymerizing polymg.
(#)positive(ly) pos.
potential difference p.d.
pound (unit) lb
pounds per square inch (unit) psi
pounds per square inch absolute (unit) psia
pounds per square inch gage (unit) psig
(#)powdered powd.
(#)precipitate ppt.
(#)precipitated pptd.
(#)precipitating pptg.
(#)precipitation pptn.
preparation prepn.
prepare prep.
prepared prepd.
preparing prepg.
(#)production prodn.
propyl (normal) Pr
(#)purification purifn.
Full Term Abbreviation
qualitative(ly) qual.
(#)quantitative(ly) quant.
quart (unit) qt
Full Term Abbreviation
radioimmunoassay RIA
random phase approximation RPA
(#)reduction redn.
reference ref.
reflection high energy RHEED
reproduction reprodn.
resolution resoln.
(#)respective(ly) resp.
respiratory quotient RQ
restricted Hartree-Fock RHF
revolutions per minute (unit) rpm
ribonuclease RNase
ribonucleic acid RNA
ribosomal RNA rRNA
roentgen (unit) R
roentgen equivalent man (unit) rem
roentgen equivalent physical (unit) rep
Full Term Abbreviation
saponification sapon.
saponified sapond.
saponifying sapong.
saturate sat.
(#)saturated satd.
saturated calomel electrode SCE
saturating satg.
(#)saturation satn.
scanning electron microscopy SEM
second (unit) s
self-consistent field SCF
separate(ly) sep.
separated sepd.
separating sepg.
separation sepn.
siemens (unit) S
Slater-type orbital STO
(#)solubility(*) soly.
(#)soluble sol.
(#)solution soln.
specific gravity sp. gr.
specific volume sp. vol.
specific weight sp. wt.
standard std.
steradian (unit) sr
stokes (unit) St
subcutaneous(ly) s.c.
(#)symmetric(al)(ly) sym.
Full Term Abbreviation
tablespoon (unit) tbs
teaspoon (unit) tsp
(#)technical(ly) tech.
temperature temp.
tesla (unit) T
tetrahydrofuran THF
theoretical(ly) theor.
thermodynamic(s) thermodn.
thyroid-stimulating TSH
titration titrn.
transfer RNA tRNA
triethylaminoethyl cellulose TEAE-cellulose
triPhosPhoPvridine nucleotide NADP
Full Term Abbreviation
ultraviolet UV
United States Pharmacopeia USP
unrestricted Hartree-Fock UHF
uridine 5'-diphosphate UDP
uridine 5'-monophosphate UMP
uridine 5'-triphosphate UTS
UV photoelectron spectroscopy UPS
Full Term Abbreviation
volt (unit) V
volume vol.
Full Term Abbreviation
watt (unit) W
weber (unit) Wb
week (unit) wk
weight wt.
Full Term Abbreviation
x-ray photoelectron spectroscopy XPS
Full Term Abbreviation
yard (unit) yd
year (unit) yr
Full Term Abbreviation
zero differential overlap ZDO

(*) Terms whose plurals are not automatically abbreviated by adding "s."

(**) For representation in computer-readable files see List of Characters and Symbols in Computer-Readable Files.

(#) If prefixed, these words are generally abbreviated. For examples, see the list of Abbreviations for some common prefixed terms which follows Listing A.

From CAS Standard Abbreviations and Acronyms.

Last modified: June 24, 2005

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