15-Letter Words Matching ____O__P_______

There are 14 15-letter words that match ____O__P_______. 3 are common words, such as HYDROCEPHALUSES and PHILOSOPHICALLY. A rarer one is PHOTODUPLICATES. In this set, H is the most frequent open letter (13 words). 2 words contain a doubled letter.

Full list 14

hydrocephalusesphilosophicallyphototypesetterphototopographyphototypographyadenohypophysesadenohypophysisaminopeptidasescyproheptadineshydroxyprolinesneurohypophysesneurohypophysisphotoduplicatedphotoduplicates

About this list

Words
14 (3 common words)
Common example
hydrocephaluses
Rare example
photoduplicates
Doubled letters
2
Ending in S
9
Most frequent letter
H (13)

Questions

How many 15-letter words matching ____o__p_______ are there?

14. 3 of them are common words.

What is a common example?

HYDROCEPHALUSES is among the common words in this set.