15-Letter Words Matching _Y__________S__

There are 12 15-letter words that match _Y__________S__. 3 are common words, such as HYDROCEPHALUSES and HYPOTHYROIDISMS. A rarer one is LYMPHOCYTOSISES. In this set, S is the most frequent open letter (12 words). 1 words contain a doubled letter.

Full list 12

hydrocephaluseshypothyroidismstyrannosauruseshypnotherapistshypochondriaseshypochondriasiscytogeneticistshydrobiologistshypercriticismshypermodernistslymphadenitiseslymphocytosises

About this list

Words
12 (3 common words)
Common example
hydrocephaluses
Rare example
lymphocytosises
Doubled letters
1
Ending in S
12
Most frequent letter
S (12)

Questions

How many 15-letter words matching _y__________s__ are there?

12. 3 of them are common words.

What is a common example?

HYDROCEPHALUSES is among the common words in this set.