Unscramble Errphsiid

What is the meaning of word errphsiid unscrambled?

What 9 letter words can be made from letters E R R P H S I I D:

1. ridership - Definition of ridership

Make more words by adding or removing letters

How many 8 letter words can you make from letters E R R P H S I I D?
Which 8 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter E and unscrambling rrphsiid
2) Removing the letter R and unscrambling erphsiid
3) Removing the letter R and unscrambling erphsiid
4) Removing the letter P and unscrambling errhsiid
5) Removing the letter H and unscrambling errpsiid
6) Removing the letter S and unscrambling errphiid
7) Removing the letter I and unscrambling errphsid
8) Removing the letter I and unscrambling errphsid
9) Removing the letter D and unscrambling errphsii

More anagrams containing the letters E R R P H S I I D
errpidhis errpidhsi heisrprdi sephiridr