13-Letter Words Matching _P__M________

There are 12 13-letter words that match _P__M________. 2 are common words, such as OPTIMIZATIONS and SPASMODICALLY. A rarer one is SPERMATOZOANS. 2 words contain a doubled letter.

Full list 12

optimizationsspasmodicallyephemeralnessspermatocytesspermatophorespermatophytespermatozoidsopenmouthedlyoptimisationsspermatogenicspermatogoniaspermatozoans

About this list

Words
12 (2 common words)
Common example
optimizations
Rare example
spermatozoans
Doubled letters
2
Ending in S
6

Questions

How many 13-letter words matching _p__m________ are there?

12. 2 of them are common words.

What is a common example?

OPTIMIZATIONS is among the common words in this set.