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 amines

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