15-Letter Words Matching _____M___O_____

There are 13 15-letter words that match _____M___O_____. 2 are common words, such as EPIDEMIOLOGISTS and MICROMETEORITES. A rarer one is ULTRAMICROTOMES. In this set, I is the most frequent open letter (13 words). 2 words contain a doubled letter.

Full list 13

epidemiologistsmicrometeoritesepidemiologicalphotomicrographphotomicroscoperadiomicrometerultramicrometerultramicroscopeinformationallymicrometeoriticmicrometeoroidstransmissometerultramicrotomes

About this list

Words
13 (2 common words)
Common example
epidemiologists
Rare example
ultramicrotomes
Doubled letters
2
Ending in S
4
Most frequent letter
I (13)

Questions

How many 15-letter words matching _____m___o_____ are there?

13. 2 of them are common words.

What is a common example?

EPIDEMIOLOGISTS is among the common words in this set.