Unscramble Umion

What is the meaning of word umion unscrambled?

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

1. onium - Definition of onium

Make more words by adding or removing letters

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

1. muni - Definition of muni

2. muon - Definition of muon

3. Unio - Definition of Unio

Which 4 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter U and unscrambling mion
2) Removing the letter M and unscrambling uion
3) Removing the letter I and unscrambling umon
4) Removing the letter O and unscrambling umin
5) Removing the letter N and unscrambling umio

More anagrams containing the letters U M I O N
umnio umnoi unoim onium