13-Letter Words Matching _____A____O__

There are 32 13-letter words that match _____A____O__. 7 are common words, such as AMALGAMATIONS and BURGLARPROOFS. A rarer one is ZYGODACTYLOUS. In this set, S is the most frequent open letter (25 words). 5 words contain a doubled letter.

Full list 32

Common words

amalgamationsburglarproofscontradictorydeescalationsexhilarationsophthalmologyproclamationsanthraquinonechromatophorecontrabassoondichlamydeousdodecahedrons
amalgamationsburglarproofscontradictorydeescalationsexhilarationsophthalmologyproclamationsanthraquinonechromatophorecontrabassoondichlamydeousdodecahedronsgentianaceousmembranaceousmembranophonepharmacognosypneumatophoreprostatectomyspermatophoreadrenalectomycamerapersonscontradictorsdesquamationsdisclamationsmedicamentousnonclassroomsovertaxationspostvasectomypyrocatecholsreescalationsstigmasterolszygodactylous

About this list

Words
32 (7 common words)
Common example
amalgamations
Rare example
zygodactylous
Doubled letters
5
Ending in S
20
Most frequent letter
S (25)

Questions

How many 13-letter words matching _____a____o__ are there?

32. 7 of them are common words.

What is a common example?

AMALGAMATIONS is among the common words in this set.