13-Letter Words Matching ________O__I_

There are 12 13-letter words that match ________O__I_. 2 are common words, such as ARCHBISHOPRIC and ONOMATOPOETIC. A rarer one is STREPTOCOCCIC. In this set, P is the most frequent open letter (11 words). 2 words contain a doubled letter.

Full list 12

archbishopriconomatopoeticchromoproteinheterotrophicnucleoproteinprediagnosticscleroproteingonadotrophicgonadotrophinmeningococcicsomatotrophinstreptococcic

About this list

Words
12 (2 common words)
Common example
archbishopric
Rare example
streptococcic
Doubled letters
2
Ending in S
0
Most frequent letter
P (11)

Questions

How many 13-letter words matching ________o__i_ are there?

12. 2 of them are common words.

What is a common example?

ARCHBISHOPRIC is among the common words in this set.