13-Letter Words Matching _A_____O_____

There are 61 13-letter words that match _A_____O_____. 12 are common words, such as BACTERIOLOGIC and CARDIOLOGISTS. A rarer one is WATERPROOFERS. In this set, I is the most frequent open letter (54 words). 15 words contain a doubled letter.

Full list 61

Common words

bacteriologiccardiologistseavesdropperseavesdroppinggastronomicalradioisotopessadomasochismsadomasochistsalutatorianssanctimonioustablespoonfulwaterproofing
bacteriologiccardiologistseavesdropperseavesdroppinggastronomicalradioisotopessadomasochismsadomasochistsalutatorianssanctimonioustablespoonfulwaterproofingbacteriolysesbacteriolysisbacteriophagebacteriostatscardiologicalcatastrophismcatastrophistgastrologicalmacroeconomicmacroscopicalpaleontologicparthenocarpyradiationallysaccharometertachistoscopebacteriolyticbacteriophagycandleholderscaulifloweretgastronomistsjabberwockieslactoglobulinmacroglobulinmalacologicalmalacologistspaleobiologicpaleoecologicpalindromistspalynologicalpalynologistspanleukopeniapapyrologistsparamyxovirusparasitologicparkinsonismspartitionistspathognomonicradiationlessradiobiologicradioisotopicradiothoriumssaccharomycessalvationismssansculottishsansculottismvaluationallyvariationallywaterfloodingwaterproofers

About this list

Words
61 (12 common words)
Common example
bacteriologic
Rare example
waterproofers
Doubled letters
15
Ending in S
23
Most frequent letter
I (54)

Questions

How many 13-letter words matching _a_____o_____ are there?

61. 12 of them are common words.

What is a common example?

BACTERIOLOGIC is among the common words in this set.