12-Letter Words Matching _R________M_

There are 20 12-letter words that match _R________M_. 3 are common words, such as CREATIONISMS and CREMATORIUMS. A rarer one is URICOTELISMS. In this set, S is the most frequent open letter (17 words). 2 words contain a doubled letter.

Full list 20

creationismscrematoriumsproselytismsarchiphonemeirredentismsorchidectomyprimitivismsprobabilismstracheostomyurethrectomyarchdukedomsarteriogramsbryophyllumscryptarithmsfreneticismsorientalismsproctodaeumsprognathismsprotophloemsuricotelisms

About this list

Words
20 (3 common words)
Common example
creationisms
Rare example
uricotelisms
Doubled letters
2
Ending in S
16
Most frequent letter
S (17)

Questions

How many 12-letter words matching _r________m_ are there?

20. 3 of them are common words.

What is a common example?

CREATIONISMS is among the common words in this set.