v. t. 1. To make into a word, coin into a word; as, The concept expressed by German "Gemuetlichkeit" is not lexicalized in English. [ WordNet 1.5 ]
2. To increase the importance of, or emphasis on, words as opposed to other parts of a theory or program; -- said of grammatical theories and computer programs, especially programs for understanding language; as, lexicalized tree-adjoining grammar. [ PJC ]