Unscramble Omnum

What is the meaning of word omnum unscrambled?

What 5 letter words can be made from letters O M N U M:

Make more words by adding or removing letters

How many 4 letter words can you make from letters O M N U M?

1. muon - Definition of muon

Which 4 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter O and unscrambling mnum
2) Removing the letter M and unscrambling onum
3) Removing the letter N and unscrambling omum
4) Removing the letter U and unscrambling omnm
5) Removing the letter M and unscrambling omnu

More anagrams containing the letters O M N U M
omumn omunm mnuom mnmou