15-Letter Words Matching ________T___T__

There are 18 15-letter words that match ________T___T__. 8 are common words, such as GASTROENTERITIS and HYPERVENTILATED. A rarer one is OVERCONSTRUCTED. In this set, E is the most frequent open letter (17 words). 2 words contain a doubled letter.

Full list 18

gastroenteritishyperventilatedhyperventilatesmonounsaturatednondepartmentalpolyunsaturatedunreconstructedunsophisticatedunauthenticatedpolyunsaturatesvasoconstrictorhemagglutinatedhemagglutinatesmicrophotometermicrophotometrymonounsaturatesnonbarbituratesoverconstructed

About this list

Words
18 (8 common words)
Common example
gastroenteritis
Rare example
overconstructed
Doubled letters
2
Ending in S
6
Most frequent letter
E (17)

Questions

How many 15-letter words matching ________t___t__ are there?

18. 8 of them are common words.

What is a common example?

GASTROENTERITIS is among the common words in this set.