Subscript

subscript
    adj 1: written or printed below and to one side of another
           character [syn: {subscript}, {inferior}] [ant:
           {adscript}, {superior}, {superscript}]
    n 1: a character or symbol set or printed or written beneath or
         slightly below and to the side of another character [syn:
         {subscript}, {inferior}] [ant: {superior}, {superscript}]
    

Subscript \Sub"script\, a. [L. subscriptus, p. p. See
   {Subscribe}.]
   Written below or underneath; as, iota subscript. (See under
   {Iota}.) Specifically (Math.), said of marks, figures, or
   letters (suffixes), written below and usually to the right of
   other letters to distinguish them; as, a, n, 2, in the
   symbols Xa, An, Y2. See {Suffix}, n., 2, and {Subindex}.
   [1913 Webster]
    

Subscript \Sub"script\, n.
   Anything written below. --Bentley.
   [1913 Webster]
    

39 Moby Thesaurus words for "subscript":
      PS, Parthian shot, addendum, afterthought, appendix, back matter,
      chorus, coda, codicil, colophon, conclusion, consequence,
      continuance, continuation, double take, dying words, envoi,
      epilogue, follow-through, follow-up, last words, parting shot,
      peroration, postface, postfix, postlude, postscript, refrain,
      second thought, sequel, sequela, sequelae, sequelant, sequent,
      sequitur, suffix, supplement, swan song, tag