15-Letter Words Matching ____O_________N

There are 34 15-letter words that match ____O_________N. 6 are common words, such as DISCONTINUATION and MICROAGGRESSION. A rarer one is THYROCALCITONIN. In this set, I is the most frequent open letter (34 words). 3 words contain a doubled letter.

Full list 34

Common words

discontinuationmicroaggressionmisconstructionnationalizationpersonificationrationalizationacetophenetidinastronavigationcommodificationlactovegetarianpersonalizationphenolphthalein
discontinuationmicroaggressionmisconstructionnationalizationpersonificationrationalizationacetophenetidinastronavigationcommodificationlactovegetarianpersonalizationphenolphthaleinphotoconductionprenotificationproconservationcyanoethylationdiagonalizationdichotomizationmicrodissectionmicroprojectionmisvocalizationnonconservationnonconstructionnontotalitarianoligomerizationphotoexcitationphotoionizationphotoproductionpremodificationradioprotectionregionalizationretroreflectionsubvocalizationthyrocalcitonin

About this list

Words
34 (6 common words)
Common example
discontinuation
Rare example
thyrocalcitonin
Doubled letters
3
Ending in S
0
Most frequent letter
I (34)

Questions

How many 15-letter words matching ____o_________n are there?

34. 6 of them are common words.

What is a common example?

DISCONTINUATION is among the common words in this set.