According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 26 words with the pattern ----O-IUM. That is, nine letter words with 5th letter O and 7th letter I and 8th letter U and 9th letter M. In alphabetical order, they are:
anthodium
carbonium
coenobium
collodium
desmodium
diacodium
diazonium
ectropium
entropium
epilobium
euphonium
harmonium
hydronium
pastorium
plutonium
purdonium
rhizobium
sensorium
sulfonium
sympodium
symposium
tentorium
trifolium
triforium
trisodium
zirconium
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern --A-A---I. That is, nine letter words with 3rd letter A and 5th letter A and 9th letter I. In alphabetical order, they are: alalagmoi scarabaei
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern ----I-I-A. That is, nine letter words with 5th letter I and 7th letter I and 9th letter A. In alphabetical order, they are: neopilina sincipita
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern AI--A----. That is, nine letter words with 1st letter A and 2nd letter I and 5th letter A. In alphabetical order, they are: airmailed
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern ----IIS--. That is, nine letter words with 5th letter I and 6th letter I and 7th letter S. In alphabetical order, they are: zombiisms
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern --I-Y--A-. That is, nine letter words with 3rd letter I and 5th letter Y and 8th letter A. In alphabetical order, they are: trigynian
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -V--A-A--. That is, nine letter words with 2nd letter V and 5th letter A and 7th letter A. In alphabetical order, they are: avadavats
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern ---MI---A. That is, nine letter words with 4th letter M and 5th letter I and 9th letter A. In alphabetical order, they are: primipara
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern ----E-I-I. That is, nine letter words with 5th letter E and 7th letter I and 9th letter I. In alphabetical order, they are: centesimi
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern ----PI--I. That is, nine letter words with 5th letter P and 6th letter I and 9th letter I. In alphabetical order, they are: douppioni
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern K---I---A. That is, nine letter words with 1st letter K and 5th letter I and 9th letter A. In alphabetical order, they are: kadaitcha
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern ----RI--I. That is, nine letter words with 5th letter R and 6th letter I and 9th letter I. In alphabetical order, they are: maharishi
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern A-I-F----. That is, nine letter words with 1st letter A and 3rd letter I and 5th letter F. In alphabetical order, they are: acidfreak