Source : Webster's Revised Unabridged Dictionary (1913)

Elison \E*li"son\, n. [L. elisio, fr. elidere, elisum, to strike
   out: cf. F. ['e]lision. See {Elide}.]
   1. Division; separation. [Obs.] --Bacon.

   2. (Gram.) The cutting off or suppression of a vowel or
      syllable, for the sake of meter or euphony; esp., in
      poetry, the dropping of a final vowel standing before an
      initial vowel in the following word, when the two words
      are drawn together.