11-Letter Words Matching ____P_____N

There are 12 11-letter words that match ____P_____N. 2 are common words, such as ACCEPTATION and REAPPORTION. A rarer one is VASOPRESSIN. In this set, O is the most frequent open letter (12 words). 4 words contain a doubled letter.

Full list 12

acceptationreapportioncalyptrogenlipoproteinmetaproteinmucoproteinpodophyllincalypsonianfetoproteinhemoproteinmalapropianvasopressin

About this list

Words
12 (2 common words)
Common example
acceptation
Rare example
vasopressin
Doubled letters
4
Ending in S
0
Most frequent letter
O (12)

Questions

How many 11-letter words matching ____p_____n are there?

12. 2 of them are common words.

What is a common example?

ACCEPTATION is among the common words in this set.