Source : Webster's Revised Unabridged Dictionary (1913)

Subjoin \Sub*join"\, v. t. [imp. & p. p. {Subjoined}; p. pr. &
   vb. n. {Subjoining}.] [Cf. OF. subjoindre, L. subjungere. See
   {Sub-}, and {Join}, and cf. {Subjective}.]
   To add after something else has been said or written; to
   ANNEX; as, to subjoin an argument or reason.

   Syn: To add; annex; join; unite.