15-Letter Words Matching _____A_____A___

There are 18 15-letter words that match _____A_____A___. 3 are common words, such as CONTRAINDICATED and CONTRAINDICATES. A rarer one is XERORADIOGRAPHY. In this set, O is the most frequent open letter (17 words). 5 words contain a doubled letter.

Full list 18

contraindicatedcontraindicatesnontransferablecrystallographyautoradiographslymphadenopathymineralogicallyperipateticallyantifashionableautoradiographyhexosaminidasesmacroaggregatedmacroaggregatesnonquantifiablepharmacodynamicradioautographsradioautographyxeroradiography

About this list

Words
18 (3 common words)
Common example
contraindicated
Rare example
xeroradiography
Doubled letters
5
Ending in S
5
Most frequent letter
O (17)

Questions

How many 15-letter words matching _____a_____a___ are there?

18. 3 of them are common words.

What is a common example?

CONTRAINDICATED is among the common words in this set.