13-Letter Words Matching H________O___

There are 12 13-letter words that match H________O___. 1 are common words, such as HYPERTHYROIDS and HYDROCARBONIC. A rarer one is HYPERRATIONAL. 2 words contain a doubled letter.

Full list 12

hyperthyroidshydrocarbonichypermetropiaheterozygosesheterozygosisheterozygoteshydrocolloidshydroquinoneshyperhidroseshyperhidrosishypermetropichyperrational

About this list

Words
12 (1 common words)
Common example
hyperthyroids
Rare example
hyperrational
Doubled letters
2
Ending in S
8

Questions

How many 13-letter words matching h________o___ are there?

12. 1 of them are common words.

What is a common example?

HYPERTHYROIDS is among the common words in this set.