Wordnet 3.0
VERB (1)
1. 
 emphasize by putting heavy stress on or by moving to the front of the sentence; 
- Example: "Speakers topicalize more often than they realize"- Example: "The object of the sentence is topicalized in what linguists call `Yiddish Movement'"
WordNet (r) 3.0 (2006):
topicalize
    v 1: emphasize by putting heavy stress on or by moving to the
         front of the sentence; "Speakers topicalize more often than
         they realize"; "The object of the sentence is topicalized
         in what linguists call `Yiddish Movement'"