Unscramble Stdin

What is the meaning of word stdin unscrambled?

What 5 letter words can be made from letters S T D I N:

1. dints - Definition of dints

Make more words by adding or removing letters

How many 4 letter words can you make from letters S T D I N?

1. dins - Definition of dins

2. dint - Definition of dint

3. dits - Definition of dits

4. inst - Definition of inst

5. NIST - Definition of NIST

6. nits - Definition of nits

7. NTIS - Definition of NTIS

8. Sind - Definition of Sind

9. snit - Definition of snit

10. tins - Definition of tins

Which 4 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter S and unscrambling tdin
2) Removing the letter T and unscrambling sdin
3) Removing the letter D and unscrambling stin
4) Removing the letter I and unscrambling stdn
5) Removing the letter N and unscrambling stdi

More anagrams containing the letters S T D I N
stdni stidn dtsni nstid