Chemistry

* ''n-'', a lowercase prefix in chemistry denoting the straight-chain form of an

open-chain compound In chemistry, an open-chain compound (also spelled as open chain compound) or acyclic compound (Greek prefix "α", ''without'' and "κύκλος", ''cycle'') is a compound with a linear structure, rather than a cyclic one. An open-chain compound ha ...

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 Amines are formally derivatives of ammonia (), wherein one or more hydrogen atoms have been replaced by a substituen ...

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