15-Letter Words Matching ____T_____L____

There are 17 15-letter words that match ____T_____L____. 2 are common words, such as EXISTENTIALISMS and EXISTENTIALISTS. A rarer one is SYMPTOMATOLOGIC. In this set, A is the most frequent open letter (16 words). 4 words contain a doubled letter.

Full list 17

existentialismsexistentialistselectroanalysiselectrodialysisallotetraploidsallotetraploidyautotetraploidsautotetraploidycountercyclicalcounterrallyingcounterviolenceelectroanalyseselectrodialyseselectrodialytichomotransplantssubstantialnesssymptomatologic

About this list

Words
17 (2 common words)
Common example
existentialisms
Rare example
symptomatologic
Doubled letters
4
Ending in S
10
Most frequent letter
A (16)

Questions

How many 15-letter words matching ____t_____l____ are there?

17. 2 of them are common words.

What is a common example?

EXISTENTIALISMS is among the common words in this set.