13-Letter Words Matching A___O________

There are 58 13-letter words that match A___O________. 26 are common words, such as ACKNOWLEDGING and AGGLOMERATING. A rarer one is ASTROCYTOMATA. In this set, I is the most frequent open letter (49 words). 22 words contain a doubled letter.

Full list 58

Common words

acknowledgingagglomeratingagglomerationairworthinessamniocentesesamniocentesisamorousnessesanalogousnessanchorpersonsangioplastiesanthologizinganxiousnesses
acknowledgingagglomeratingagglomerationairworthinessamniocentesesamniocentesisamorousnessesanalogousnessanchorpersonsangioplastiesanthologizinganxiousnessesappropriatelyappropriatingappropriationappropriatorsapproximatelyapproximatingapproximationarduousnessesastronauticalastrophysicalauthoritarianauthoritativeauthorizationawesomenessesachlorhydriasachromaticityachromatizingadenoidectomyaggiornamentoagglomerativeandrogynouslyandrosteronesanemographiesaneroidographangiographiesanisometropiaapatosaurusesaphrodisiacalastrodynamicsaudiocassetteacetonitrilesagamospermiesaminoaciduriaaminophyllineamyloidosisesangiospermousanisometropicanisotropismsanthologizersanthophylliteantiobesitiesantiobscenityaortographiesappropriativeapproximativeastrocytomata

About this list

Words
58 (26 common words)
Common example
acknowledging
Rare example
astrocytomata
Doubled letters
22
Ending in S
25
Most frequent letter
I (49)

Questions

How many 13-letter words matching a___o________ are there?

58. 26 of them are common words.

What is a common example?

ACKNOWLEDGING is among the common words in this set.