12-Letter Words Matching T__________T

There are 19 12-letter words that match T__________T. 6 are common words, such as TECHNOLOGIST and TELEGRAPHIST. A rarer one is TRICHOLOGIST. In this set, S is the most frequent open letter (18 words). 5 words contain a doubled letter.

Full list 19

technologisttelegraphisttoxicologisttranquillesttranscendenttroubleshootteratologisttherapeutistthoroughworttraditionisttrampolinisttranscurrenttranshipmenttransmigranttriumphalistthalassocratthankfullesttransductanttrichologist

About this list

Words
19 (6 common words)
Common example
technologist
Rare example
trichologist
Doubled letters
5
Ending in S
0
Most frequent letter
S (18)

Questions

How many 12-letter words matching t__________t are there?

19. 6 of them are common words.

What is a common example?

TECHNOLOGIST is among the common words in this set.