TRANSLATION ASSISTANCE DEVICE, TRANSLATION ASSISTANCE SYSTEM, AND CONTROL METHOD FOR THE SAME

The translation assistance device is equipped with: a dictionary means storing dictionary data comprising terms in a specific language, and terms in another language corresponding to the terms in said specific language; a specification means specifying the selected range of a term to be searched for in a text containing the term; a search means searching for the longest full-string match corresponding to the term contained in the specified selected range using said dictionary data as the search target; and a display control means displaying the terms in the other language corresponding to the term matching in the search for the longest full-string match. The translation assistance device searches for the longest full-string match by searching the dictionary means using all characters in the selected range, and reducing the characters in the selected range one at a time from the head character if there is no match.