13-Letter Words Matching ____I_______R

There are 12 13-letter words that match ____I_______R. 2 are common words, such as BIBLIOGRAPHER and PASSIONFLOWER. A rarer one is SUBMILLIMETER. 3 words contain a doubled letter.

Full list 12

bibliographerpassionflowermulticellularmultivibratorphysiographerrequisitionerstationmastertergiversatorvasoinhibitorfashionmongermultiemployersubmillimeter

About this list

Words
12 (2 common words)
Common example
bibliographer
Rare example
submillimeter
Doubled letters
3
Ending in S
0

Questions

How many 13-letter words matching ____i_______r are there?

12. 2 of them are common words.

What is a common example?

BIBLIOGRAPHER is among the common words in this set.