11-Letter Words Matching _____Y__O__

There are 12 11-letter words that match _____Y__O__. 3 are common words, such as ANTICYCLONE and ICHTHYOLOGY. A rarer one is MESOCYCLONE. 1 words contain a doubled letter.

Full list 12

anticycloneichthyologyparatyphoidcherrystonechlamydeoushypocycloidmonohydroxypolyhydroxyantityphoideucalyptoleeucalyptolsmesocyclone

About this list

Words
12 (3 common words)
Common example
anticyclone
Rare example
mesocyclone
Doubled letters
1
Ending in S
2

Questions

How many 11-letter words matching _____y__o__ are there?

12. 3 of them are common words.

What is a common example?

ANTICYCLONE is among the common words in this set.