14-Letter Words Matching H___________T_

There are 15 14-letter words that match H___________T_. 3 are common words, such as HERPETOLOGISTS and HUNDREDWEIGHTS. A rarer one is HYPERVISCOSITY. In this set, I is the most frequent open letter (13 words). 3 words contain a doubled letter.

Full list 15

herpetologistshundredweightshyperventilatehalfpennyworthhemagglutinatehemoflagellatehepatotoxicityheterozygosityhydrophilicityhydrophobicityhydroxyapatitehygroscopicityhypersexualityhyperstimulatehyperviscosity

About this list

Words
15 (3 common words)
Common example
herpetologists
Rare example
hyperviscosity
Doubled letters
3
Ending in S
2
Most frequent letter
I (13)

Questions

How many 14-letter words matching h___________t_ are there?

15. 3 of them are common words.

What is a common example?

HERPETOLOGISTS is among the common words in this set.