14-Letter Words Matching ______O_____U_

There are 13 14-letter words that match ______O_____U_. 1 are common words, such as EXTEMPORANEOUS and FIDEICOMMISSUM. A rarer one is PAPILLOMAVIRUS. In this set, S is the most frequent open letter (11 words). 2 words contain a doubled letter.

Full list 13

extemporaneousfideicommissumforethoughtfulmegasporangiummyrmecophagousnonhomogeneouspapilionaceouscampylotropouschondrocraniumhyperconsciousichthyophagousmyrmecophilouspapillomavirus

About this list

Words
13 (1 common words)
Common example
extemporaneous
Rare example
papillomavirus
Doubled letters
2
Ending in S
9
Most frequent letter
S (11)

Questions

How many 14-letter words matching ______o_____u_ are there?

13. 1 of them are common words.

What is a common example?

EXTEMPORANEOUS is among the common words in this set.