13-Letter Words Matching ____I_____R__

There are 29 13-letter words that match ____I_____R__. 7 are common words, such as AMPHITHEATRES and ARCHITECTURAL. A rarer one is TURBIDIMETRIC. In this set, T is the most frequent open letter (28 words). 2 words contain a doubled letter.

Full list 29

Common words

amphitheatresarchitecturalarchitectureshorticulturalhorticulturesmillionnairesmulticulturalaluminothermyfloriculturesmastigophoranpisciculturalrectilinearly
amphitheatresarchitecturalarchitectureshorticulturalhorticulturesmillionnairesmulticulturalaluminothermyfloriculturesmastigophoranpisciculturalrectilinearlysilviculturalsilviculturesamphitheatriccaulifloweretcitriculturesdensitometricfloriculturalmillilambertsmultispectralpisciculturespoikilothermspostinauguralpteridospermsrespirometricsensitometricsylviculturesturbidimetric

About this list

Words
29 (7 common words)
Common example
amphitheatres
Rare example
turbidimetric
Doubled letters
2
Ending in S
12
Most frequent letter
T (28)

Questions

How many 13-letter words matching ____i_____r__ are there?

29. 7 of them are common words.

What is a common example?

AMPHITHEATRES is among the common words in this set.