Unscramble Retitis

What is the meaning of word retitis unscrambled?

What 7 letter words can be made from letters R E T I T I S:

Make more words by adding or removing letters

How many 6 letter words can you make from letters R E T I T I S?

1. Sitter - Definition of Sitter

2. tetris - Definition of tetris

3. titers - Definition of titers

4. titres - Definition of titres

5. triste - Definition of triste

Which 6 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter R and unscrambling etitis
2) Removing the letter E and unscrambling rtitis
3) Removing the letter T and unscrambling reitis
4) Removing the letter I and unscrambling rettis
5) Removing the letter T and unscrambling retiis
6) Removing the letter I and unscrambling retits
7) Removing the letter S and unscrambling retiti

More anagrams containing the letters R E T I T I S
retitsi retsiit eisritt isettir