11-Letter Words Matching _I________M

There are 15 11-letter words that match _I________M. 3 are common words, such as BIMETALLISM and EINSTEINIUM. A rarer one is PITTOSPORUM. In this set, S is the most frequent open letter (15 words). 3 words contain a doubled letter.

Full list 15

bimetallismeinsteiniumvigilantismbiracialismbisexualismdiatonicismdidacticismdisaccustomdiversiformdivisionismhighbrowismhistoricismhistrionismlibertinismpittosporum

About this list

Words
15 (3 common words)
Common example
bimetallism
Rare example
pittosporum
Doubled letters
3
Ending in S
0
Most frequent letter
S (15)

Questions

How many 11-letter words matching _i________m are there?

15. 3 of them are common words.

What is a common example?

BIMETALLISM is among the common words in this set.