15-Letter Words Matching ___T____L______

There are 16 15-letter words that match ___T____L______. 2 are common words, such as BACTERIOLOGICAL and BACTERIOLOGISTS. A rarer one is PROTOZOOLOGISTS. In this set, I is the most frequent open letter (15 words). 6 words contain a doubled letter.

Full list 16

bacteriologicalbacteriologistscontravallationmistranslationsmasterfulnessesmontmorillonitemultimillennialphotobiologicalphotobiologistsphotoduplicatedphotoduplicatesphotogeologicalphotogeologistspictorialnessespostdevaluationprotozoologists

About this list

Words
16 (2 common words)
Common example
bacteriological
Rare example
protozoologists
Doubled letters
6
Ending in S
8
Most frequent letter
I (15)

Questions

How many 15-letter words matching ___t____l______ are there?

16. 2 of them are common words.

What is a common example?

BACTERIOLOGICAL is among the common words in this set.