14-Letter Words Matching _________I_S__

There are 12 14-letter words that match _________I_S__. 1 are common words, such as BOUILLABAISSES and ERYTHROPOIESIS. A rarer one is ONCHOCERCIASIS. 2 words contain a doubled letter.

Full list 12

bouillabaisseserythropoiesisfideicommissumpneumoconiosespneumoconiosistrichomoniasestrichomoniasischolelithiasescholelithiasiserythropoiesesonchocerciasesonchocerciasis

About this list

Words
12 (1 common words)
Common example
bouillabaisses
Rare example
onchocerciasis
Doubled letters
2
Ending in S
11

Questions

How many 14-letter words matching _________i_s__ are there?

12. 1 of them are common words.

What is a common example?

BOUILLABAISSES is among the common words in this set.