Chemistry

* ''n-'', a lowercase prefix in chemistry denoting the straight-chain form of an open-chain compound in contrast to its branched isomer * ''N-'', an uppercase prefix in chemistry denoting that the substituent is bonded to the nitrogen, as in

amine In chemistry, amines (, ) are compounds and functional groups that contain a basic nitrogen atom with a lone pair. Amines are formally derivatives of ammonia (), wherein one or more hydrogen Hydrogen is the chemical element wi ...

Mathematics, science and technology

The italicized letter ''n'' is used in mathematics to denote an arbitrary number (usually a non-negative integer). * ''n''-ary associativity * ''n''-ary code * ''n''-ary group * ''n''-back * ''n''-body problem * ''n''-category * ''n''-category number * ''n''-connected space * ''n''-curve * ''n''-dimensional space * ''n''-dimensional sequential move puzzle * ''n''-electron valence state perturbation theory (NEVPT) * ''n''-entity * ''n''-flake * ''n''-gram * ''n''-group * ''n''-monoid * ''n''-player game * ''n''-skeleton * ''n''-slit interferometer * ''n''-slit interferometric equation * ''n''-sphere * ''n''-vector * ''n''-vector model {{Disambig Prefixes