Source : Webster's Revised Unabridged Dictionary (1913)

Adjunction \Ad*junc"tion\, n. [L. adjunctio, fr. adjungere: cf.
   F. adjonction, and see {Adjunct}.]
   The act of joining; the thing joined or added.

Source : WordNet®

adjunction
     n : an act of joining or adjoining things [syn: {junction}]