13-Letter Words Matching _____AM______

There are 15 13-letter words that match _____AM______. 4 are common words, such as AMALGAMATIONS and PARLIAMENTARY. A rarer one is TRANSAMINASES. In this set, I is the most frequent open letter (14 words). 7 words contain a doubled letter.

Full list 15

amalgamationsparliamentaryproclamationsprogrammablesanagrammatizedichlamydeousepigrammatistepigrammatizedesquamationsdisclamationsepigrammatismjackhammeringmedicamentouspanoramicallytransaminases

About this list

Words
15 (4 common words)
Common example
amalgamations
Rare example
transaminases
Doubled letters
7
Ending in S
8
Most frequent letter
I (14)

Questions

How many 13-letter words matching _____am______ are there?

15. 4 of them are common words.

What is a common example?

AMALGAMATIONS is among the common words in this set.