Biology •
Computational neuroethology, the study of animal behavior and its control by the nervous system •
Cranial nerves, CN 0 to CN XII
Chemistry •
CN gas, a substituted acetophenone used as a riot control agent •
Copernicium, symbol Cn, a chemical element •
Cyanide, any chemical compound that contains a carbon atom triple-bonded to a nitrogen atom, -CN •
Cyano radical, molecular formula ·CN •
Cyanogen, a colorless, toxic gas with a pungent odor, (CN)2
Computing •
.cn, country code top-level domain for mainland China •
Cloud native computing, an approach in software development • Common Name, an attribute of the
Lightweight Directory Access Protocol protocol family • Common Name, an attribute of
X.509 public-key certificates •
VIA CN, a 64-bit CPU for personal computers
Mathematics • Cn, a
cyclic group • Cn, a classical
root system •
cn (elliptic function), one of Jacobi's elliptic functions
Other uses in mathematics, science, and technology •
Carrier-to-noise ratio C/N, the signal-to-noise ratio of a modulated signal •
Curve number, a parameter used in hydrology for predicting direct runoff or infiltration from rainfall • cN, abbreviation for
centinewton, a force equal to one hundredth of a newton •
Classical nova, a type of cataclysmic variable star == Other uses ==