Why are only certain parts of some compound words pronounced?
This happens when part of the compound is already pronounced elsewhere in the dictionary. For example, at the “Grand Teton” entry “Grand” is not pronounced because it is already pronounced at the “grand” entry; “Teton” is pronounced, however, because there is no entry or pronunciation for “Teton” by itself. Similarly, at “Hohokam Pima National Monument,” only the audio pronunciation “Hohokam Pima” is given, because “national” and “monument” are pronounced at their own entries.