13-Letter Words Matching _____T____R__

There are 12 13-letter words that match _____T____R__. 3 are common words, such as AMPHITHEATRES and ARCHITECTURAL. A rarer one is TELEUTOSPORES. In this set, E is the most frequent open letter (12 words). 1 words contain a doubled letter.

Full list 12

amphitheatresarchitecturalarchitecturesintratelluricradiotelegramtetartohedralamphitheatricdensitometricmagistraturesmagnetometricsensitometricteleutospores

About this list

Words
12 (3 common words)
Common example
amphitheatres
Rare example
teleutospores
Doubled letters
1
Ending in S
4
Most frequent letter
E (12)

Questions

How many 13-letter words matching _____t____r__ are there?

12. 3 of them are common words.

What is a common example?

AMPHITHEATRES is among the common words in this set.