13-Letter Words Matching H_____T______

There are 19 13-letter words that match H_____T______. 2 are common words, such as HEURISTICALLY and HUMANITARIANS. A rarer one is HYPOPITUITARY. In this set, I is the most frequent open letter (16 words). 3 words contain a doubled letter.

Full list 19

heuristicallyhumanitarianshelminthiasishelminthologyhematothermalhereditamentsheterothallicheterotrophichomileticallyhydrostaticalhabilitationshelminthiaseshemacytometerhemocytometerhereditarianshexamethoniumhomoiothermichypoeutectoidhypopituitary

About this list

Words
19 (2 common words)
Common example
heuristically
Rare example
hypopituitary
Doubled letters
3
Ending in S
6
Most frequent letter
I (16)

Questions

How many 13-letter words matching h_____t______ are there?

19. 2 of them are common words.

What is a common example?

HEURISTICALLY is among the common words in this set.