12-Letter Words Matching ______R___M_

There are 12 12-letter words that match ______R___M_. 2 are common words, such as CALIFORNIUMS and PERICARDIUMS. A rarer one is VANGUARDISMS. In this set, S is the most frequent open letter (12 words). 1 words contain a doubled letter.

Full list 12

californiumspericardiumscounterstampendocardiumspleochroismscologarithmscryptarithmslandlordismsscattergramssuperorgasmstetradrachmsvanguardisms

About this list

Words
12 (2 common words)
Common example
californiums
Rare example
vanguardisms
Doubled letters
1
Ending in S
11
Most frequent letter
S (12)

Questions

How many 12-letter words matching ______r___m_ are there?

12. 2 of them are common words.

What is a common example?

CALIFORNIUMS is among the common words in this set.