11-Letter Words Matching _____A____M

There are 15 11-letter words that match _____A____M. 4 are common words, such as BIMETALLISM and INCUNABULUM. A rarer one is RETINACULUM. In this set, I is the most frequent open letter (15 words). 2 words contain a doubled letter.

Full list 15

bimetallismincunabulumpericardiumvigilantismantifascismcologarithmendocardiumgametangiumprognathismvanguardismcryptarithmgourmandismpleinairismprothalliumretinaculum

About this list

Words
15 (4 common words)
Common example
bimetallism
Rare example
retinaculum
Doubled letters
2
Ending in S
0
Most frequent letter
I (15)

Questions

How many 11-letter words matching _____a____m are there?

15. 4 of them are common words.

What is a common example?

BIMETALLISM is among the common words in this set.