15-Letter Words Matching ____O___C______

There are 22 15-letter words that match ____O___C______. 5 are common words, such as INTROSPECTIVELY and MICROELECTRONIC. A rarer one is THYROIDECTOMIES. 2 words contain a doubled letter.

Full list 22

introspectivelymicroelectronicmicroprocessorsnitroglycerinesretrospectivelyadenocarcinomasadenoidectomiesmastoidectomiesneuropsychiatryoligosaccharideorthopsychiatrypaleopsychologyphotoelectricalpiezoelectricaleutrophicationsintrospectionalmicroelectrodesneuropsychologyphotoelectronicsacrosanctitiesthyrocalcitoninthyroidectomies

About this list

Words
22 (5 common words)
Common example
introspectively
Rare example
thyroidectomies
Doubled letters
2
Ending in S
9

Questions

How many 15-letter words matching ____o___c______ are there?

22. 5 of them are common words.

What is a common example?

INTROSPECTIVELY is among the common words in this set.