15-Letter Words Matching M___________N__

There are 12 15-letter words that match M___________N__. 2 are common words, such as MICROELECTRONIC and MOUNTAINEERINGS. A rarer one is MULTIDIVISIONAL. In this set, T is the most frequent open letter (12 words). 2 words contain a doubled letter.

Full list 12

microelectronicmountaineeringsmalnourishmentsmalpractitionermercaptopurinesmultifunctionalmethoxyfluranesmethylxanthinesmiscegenationalmismeasurementsmonopropellantsmultidivisional

About this list

Words
12 (2 common words)
Common example
microelectronic
Rare example
multidivisional
Doubled letters
2
Ending in S
7
Most frequent letter
T (12)

Questions

How many 15-letter words matching m___________n__ are there?

12. 2 of them are common words.

What is a common example?

MICROELECTRONIC is among the common words in this set.