15-Letter Words Matching _A_____O_______

There are 33 15-letter words that match _A_____O_______. 8 are common words, such as BACTERIOLOGICAL and BACTERIOLOGISTS. A rarer one is RADIOPROTECTIVE. In this set, I is the most frequent open letter (31 words). 7 words contain a doubled letter.

Full list 33

Common words

bacteriologicalbacteriologistsgastronomicallypaleontologistsparthenogenesesparthenogenesissadomasochisticsanctimoniouslygastrologicallymacroscopicallypaleontologicalparthenogenetic
bacteriologicalbacteriologistsgastronomicallypaleontologistsparthenogenesesparthenogenesissadomasochisticsanctimoniouslygastrologicallymacroscopicallypaleontologicalparthenogeneticpassifloraceousradiophotographbacteriophagiesmacroevolutionsmacrophotographpaleobiologicalpaleobiologistspaleoecologicalpaleoecologistspaleogeographicpaleozoologicalpaleozoologistspalynologicallyparamyxovirusesparasitologicalparasitologistsparthenocarpiesradiobiologicalradiobiologistsradioprotectionradioprotective

About this list

Words
33 (8 common words)
Common example
bacteriological
Rare example
radioprotective
Doubled letters
7
Ending in S
14
Most frequent letter
I (31)

Questions

How many 15-letter words matching _a_____o_______ are there?

33. 8 of them are common words.

What is a common example?

BACTERIOLOGICAL is among the common words in this set.