Unscramble Phsreriid

What is the meaning of word phsreriid unscrambled?

What 9 letter words can be made from letters P H S R E R 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 P H S R E R I I D?
Which 8 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter P and unscrambling hsreriid
2) Removing the letter H and unscrambling psreriid
3) Removing the letter S and unscrambling phreriid
4) Removing the letter R and unscrambling phseriid
5) Removing the letter E and unscrambling phsrriid
6) Removing the letter R and unscrambling phsreiid
7) Removing the letter I and unscrambling phsrerid
8) Removing the letter I and unscrambling phsrerid
9) Removing the letter D and unscrambling phsrerii

More anagrams containing the letters P H S R E R I I D
phsrideir phsrideri isiherprd rsipeihrd