The Collaborative International Dictionary of English v.0.48:

Deglutition \Deg`lu*ti"tion\, n. [L. deglutire to swallow down;
   de- + glutire to swallow: cf. F. d['e]glutition. See Glut.]
   The act or process of swallowing food; the power of
   swallowing.
   [1913 Webster]

         The muscles employed in the act of deglutition.
                                                  --Paley.
   [1913 Webster]

WordNet (r) 3.0 (2006):

deglutition
    n 1: the act of swallowing; "one swallow of the liquid was
         enough"; "he took a drink of his beer and smacked his lips"
         [syn: swallow, drink, deglutition]