15-Letter Words Matching _A____I________

There are 20 15-letter words that match _A____I________. 6 are common words, such as BACTERIOLOGICAL and BACTERIOLOGISTS. A rarer one is RADIOBIOLOGISTS. In this set, I is the most frequent open letter (17 words). 7 words contain a doubled letter.

Full list 20

bacteriologicalbacteriologistshallucinogenicsmaintainabilitymasochisticallytalkativenesseshallucinationalmagnanimousnesspantheisticallyradiomicrometerbacteriophagieseasygoingnesseslatensificationmaladministeredmasculinizationpaleobiologicalpaleobiologistsparticipationalradiobiologicalradiobiologists

About this list

Words
20 (6 common words)
Common example
bacteriological
Rare example
radiobiologists
Doubled letters
7
Ending in S
8
Most frequent letter
I (17)

Questions

How many 15-letter words matching _a____i________ are there?

20. 6 of them are common words.

What is a common example?

BACTERIOLOGICAL is among the common words in this set.