13-Letter Words Matching ____M____E___

There are 20 13-letter words that match ____M____E___. 3 are common words, such as PHARMACOPEIAS and STEAMROLLERED. A rarer one is THERMOSPHERIC. In this set, O is the most frequent open letter (18 words). 3 words contain a doubled letter.

Full list 20

pharmacopeiassteamrolleredunsympatheticilluminometerinhomogeneityinhomogeneouspneumatometerthermesthesiathermogenesisthermosphereschromosphereschromosphericforaminiferalforaminiferanmonomorphemicopenmouthedlypharmacopeialrecommitmentsspermatogenicthermospheric

About this list

Words
20 (3 common words)
Common example
pharmacopeias
Rare example
thermospheric
Doubled letters
3
Ending in S
6
Most frequent letter
O (18)

Questions

How many 13-letter words matching ____m____e___ are there?

20. 3 of them are common words.

What is a common example?

PHARMACOPEIAS is among the common words in this set.