12-Letter Words Matching _____HY_____

There are 18 12-letter words that match _____HY_____. 4 are common words, such as CARBOHYDRATE and HYPOTHYROIDS. A rarer one is XEROPHYTISMS. In this set, O is the most frequent open letter (16 words). 7 words contain a doubled letter.

Full list 18

carbohydratehypothyroidsmetaphysicalparathyroidscyanohydrinsgamophyllousmonophyleticpolyphyleticpyrophyllitetheophyllinebryophyllumscarbohydrasemesophyllouspodophyllinspodophyllumspolyrhythmictetrahymenasxerophytisms

About this list

Words
18 (4 common words)
Common example
carbohydrate
Rare example
xerophytisms
Doubled letters
7
Ending in S
10
Most frequent letter
O (16)

Questions

How many 12-letter words matching _____hy_____ are there?

18. 4 of them are common words.

What is a common example?

CARBOHYDRATE is among the common words in this set.