Databases for Chemists and Chemical Engineers
Chemical Abstracts
SciFinder Scholar |
CAS Online |
Standard Abbreviations |
Index Guide |
Guide to CASREACT |
Structure Searching with STN Express
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
A
| 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. |
B
| 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 |
C
| 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 |
D
| 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. |
E
| 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. |
F
| 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. |
G
| 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 |
H
| 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 |
I
| 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 |
J
| Full Term |
Abbreviation |
| joule (unit) |
J |
K
| Full Term |
Abbreviation |
| kelvin (unit) |
K |
L
| 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 |
M
| 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 |
N
| 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. |
O
| Full Term |
Abbreviation |
| observed |
obsd. |
| oersted (unit) |
Oe |
| ohm (unit) |
W(**) |
| optical rotatory dispersion |
ORD |
| (#)organic |
org. |
| ounce (unit) |
oz |
| (#)oxidation |
oxidn. |
P
| 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. |
Q
| Full Term |
Abbreviation |
| qualitative(ly) |
qual. |
| (#)quantitative(ly) |
quant. |
| quart (unit) |
qt |
R
| 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 |
S
| 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. |
T
| 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 |
U
| 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 |
V
| Full Term |
Abbreviation |
| volt (unit) |
V |
| volume |
vol. |
W
| Full Term |
Abbreviation |
| watt (unit) |
W |
| weber (unit) |
Wb |
| week (unit) |
wk |
| weight |
wt. |
X
| Full Term |
Abbreviation |
| x-ray photoelectron spectroscopy |
XPS |
Y
| Full Term |
Abbreviation |
| yard (unit) |
yd |
| year (unit) |
yr |
Z
| 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.
