Latin Subscript Small Letter N

Latin Subscript Small Letter N at U+2099 is a small baseline-lowered form of the Latin letter n used when an n belongs in subscript position as part of notation. It sits in the Superscripts and Subscripts block and is categorized as a modifier letter rather than an ordinary lowercase n. Its clearest use is in mathematical and scientific formulas copied into plain text, where it can label the nth term or an indexed quantity without full equation formatting: aₙ for a sequence term, xₙ for an indexed variable, or Fₙ for the nth Fibonacci number. Similar notation appears in physics, statistics, and engineering when variables are distinguished by an index, such as Vₙ for a named component or pₙ for a probability in a sequence. It is also useful in technical notes, filenames, chat, and environments that allow Unicode text but not rich subscripting. Because it is a distinct character rather than styled text, searching for aₙ may not match a plain “an” or an equation-editor subscript, and many authors still prefer markup or math layout systems for formal publications.