What are some nine letter words with 3rd letter E and 4th letter R and 5th letter I and 6th letter D?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern --ERID---. That is, nine letter words with 3rd letter E and 4th letter R and 5th letter I and 6th letter D. In alphabetical order, they are:

gueridons

pieridine

pteridine