The Collaborative International Dictionary of English v.0.48:

Literalize \Lit"er*al*ize\ (l[i^]t"[~e]r*al*[imac]z), v. t.
   [imp. & p. p. Literalized (l[i^]t"[~e]r*al*[imac]zd); p.
   pr. & vb. n. Literalizing
   (l[i^]t"[~e]r*al*[imac]*z[i^]ng).]
   To make literal; to interpret or put in practice according to
   the strict meaning of the words; -- opposed to
   spiritualize; as, to literalize Scripture.
   [1913 Webster]

WordNet (r) 3.0 (2006):

literalize
    v 1: make literal; "literalize metaphors" [syn: literalize,
         literalise] [ant: spiritualise, spiritualize]