Unscramble Umation

What is the meaning of word umation unscrambled?

What 7 letter words can be made from letters U M A T I O N:

1. manitou - Definition of manitou

2. tinamou - Definition of tinamou

Make more words by adding or removing letters

How many 6 letter words can you make from letters U M A T I O N?

1. amount - Definition of amount

2. manito - Definition of manito

3. manitu - Definition of manitu

4. Montia - Definition of Montia

5. outman - Definition of outman

Which 6 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter U and unscrambling mation
2) Removing the letter M and unscrambling uation
3) Removing the letter A and unscrambling umtion
4) Removing the letter T and unscrambling umaion
5) Removing the letter I and unscrambling umaton
6) Removing the letter O and unscrambling umatin
7) Removing the letter N and unscrambling umatio

More anagrams containing the letters U M A T I O N
umatnio umatnoi tuinamo tnaoumi