12-Letter Words Matching ____N_____A_

There are 26 12-letter words that match ____N_____A_. 4 are common words, such as AERONAUTICAL and BICENTENNIAL. A rarer one is STERNOCOSTAL. In this set, I is the most frequent open letter (21 words). 3 words contain a doubled letter.

Full list 26

Common words

aeronauticalbicentennialhumanitarianmelancholiasappendiculardefinitionalhymenopteranintonationalmelancholiacnonuniversalpreinauguraltyrannicidal
aeronauticalbicentennialhumanitarianmelancholiasappendiculardefinitionalhymenopteranintonationalmelancholiacnonuniversalpreinauguraltyrannicidalantinationalantonomasiasbifunctionaldiagnosticaldibenzofurandifunctionalinfanticidalinfundibularmotoneuronalparonomasiaspogonophoranpostneonatalretinotectalsternocostal

About this list

Words
26 (4 common words)
Common example
aeronautical
Rare example
sternocostal
Doubled letters
3
Ending in S
3
Most frequent letter
I (21)

Questions

How many 12-letter words matching ____n_____a_ are there?

26. 4 of them are common words.

What is a common example?

AERONAUTICAL is among the common words in this set.