2. The system defined by claim 1 , wherein the operations further comprise selecting a first meaningful expression based on a similarity between a first combination and a second combination, the first combination including a second meaningful term and a third meaningful term, the second combination including the expansion of the second abbreviated term and the expansion of the third abbreviated term, the first meaningful expression including the second meaningful term and the third meaningful term.
3. The system defined by claim 2 , wherein the operations further comprise selecting the first meaningful term based on the second meaningful term.