15-Letter Words Matching ____O___D______

There are 13 15-letter words that match ____O___D______. 2 are common words, such as ACKNOWLEDGEMENT and ACKNOWLEDGMENTS. A rarer one is RETROGRADATIONS. In this set, N is the most frequent open letter (13 words). 1 words contain a doubled letter.

Full list 13

acknowledgementacknowledgmentsacknowledgeablenonconfidentialphotoconductionunknowledgeableoligodendrocyteoligodendrogliaphonocardiogramphotoconductivephotooxidationsphotoproductionretrogradations

About this list

Words
13 (2 common words)
Common example
acknowledgement
Rare example
retrogradations
Doubled letters
1
Ending in S
3
Most frequent letter
N (13)

Questions

How many 15-letter words matching ____o___d______ are there?

13. 2 of them are common words.

What is a common example?

ACKNOWLEDGEMENT is among the common words in this set.