15-Letter Words Matching ____A____C_____

There are 14 15-letter words that match ____A____C_____. 2 are common words, such as INFRASTRUCTURES and SYLLABIFICATION. A rarer one is ULTRASTRUCTURES. In this set, T is the most frequent open letter (14 words). 3 words contain a doubled letter.

Full list 14

infrastructuressyllabificationinfrastructuraltetrabranchiatecotransductionsextrajudiciallymechanoreceptoroverapplicationpremanufacturedpremanufacturesrequalificationultrademocraticultrastructuralultrastructures

About this list

Words
14 (2 common words)
Common example
infrastructures
Rare example
ultrastructures
Doubled letters
3
Ending in S
4
Most frequent letter
T (14)

Questions

How many 15-letter words matching ____a____c_____ are there?

14. 2 of them are common words.

What is a common example?

INFRASTRUCTURES is among the common words in this set.