9-Letter Words Matching ___U_O___

There are 20 9-letter words that match ___U_O___. 4 are common words, such as GLAUCOMAS and PNEUMONIA. A rarer one is SILUROIDS. In this set, S is the most frequent open letter (15 words). 1 words contain a doubled letter.

Full list 20

glaucomaspneumoniapseudonymuntutoredaleuronesamaurosesamaurosislevulosespneumonicpseudopodsinusoidsalbumosesamauroticgroupoidsimmunogenjelutongslemuroidslimuloidsmedusoidssiluroids

About this list

Words
20 (4 common words)
Common example
glaucomas
Rare example
siluroids
Doubled letters
1
Ending in S
13
Most frequent letter
S (15)

Questions

How many 9-letter words matching ___u_o___ are there?

20. 4 of them are common words.

What is a common example?

GLAUCOMAS is among the common words in this set.