12-Letter Words Containing NIU

There are 14 12-letter words that contain NIU. 6 are common words, such as CALIFORNIUMS and CONDOMINIUMS. A rarer one is SPERMAGONIUM. In this set, M is the most frequent open letter (14 words). 2 words contain a doubled letter.

Full list 14

californiumscondominiumseinsteiniumspandemoniumsprotactiniumquadrenniumsandrocliniumquinquenniumspermogoniumtransuraniumpelargoniumsphosphoniumspositroniumsspermagonium

About this list

Words
14 (6 common words)
Common example
californiums
Rare example
spermagonium
Doubled letters
2
Ending in S
8
Most frequent letter
M (14)

Questions

How many 12-letter words containing niu are there?

14. 6 of them are common words.

What is a common example?

CALIFORNIUMS is among the common words in this set.