\Suf"fix\, n. [L. suffixus, p. p. of suffigere to fasten
on, to affix; sub under + figere to fix: cf. F. suffixe. See
{Fix}.]
1. A letter, letters, syllable, or syllables added or
   appended to the end of a word or a root to modify the
   meaning; a postfix.
2. (Math.) A subscript mark, number, or letter. See
   {Subscript}, a.

\Suf*fix"\, v. t. [imp. & p. p. {Suffixed}; p. pr. & vb.
n. {Suffixing}.]
To add or annex to the end, as a letter or syllable to a
word; to append.