12-Letter Words Containing UMS

There are 39 12-letter words that contain UMS. 16 are common words, such as CALIFORNIUMS and CANDELABRUMS. A rarer one is ULTRAVACUUMS. In this set, I is the most frequent open letter (31 words). 11 words contain a doubled letter.

Full list 39

Common words

californiumscandelabrumscarborundumscircumscribecircumstanceclumsinessescondominiumscrematoriumseinsteiniumsequilibriumsinterregnumsmendeleviums
californiumscandelabrumscarborundumscircumscribecircumstanceclumsinessescondominiumscrematoriumseinsteiniumsequilibriumsinterregnumsmendeleviumspandemoniumspericardiumsplanetariumsquadrenniumsantheridiumsantirrhinumsclostridiumsendocardiumsendometriumssuperphylumsunnilhexiumsantependiumsaspergillumsbryophyllumscypripediumsleprosariumsmagisteriumspelargoniumsphosphoniumspittosporumspodophyllumspositroniumsproctodaeumssempervivumssuccedaneumstetrazoliumsultravacuums

About this list

Words
39 (16 common words)
Common example
californiums
Rare example
ultravacuums
Doubled letters
11
Ending in S
37
Most frequent letter
I (31)

Questions

How many 12-letter words containing ums are there?

39. 16 of them are common words.

What is a common example?

CALIFORNIUMS is among the common words in this set.