13-Letter Words Matching ____O___D____

There are 15 13-letter words that match ____O___D____. 4 are common words, such as ACKNOWLEDGING and ORTHOPAEDISTS. A rarer one is PROBOSCIDIANS. In this set, I is the most frequent open letter (13 words). 5 words contain a doubled letter.

Full list 15

acknowledgingorthopaedistsphilodendronsrhododendronsachlorhydriasdistortednessproboscideansaminoacidurianonconfidencenoncorrodiblenoncorrodingsphotooxidizedphotooxidizesphotoproductsproboscidians

About this list

Words
15 (4 common words)
Common example
acknowledging
Rare example
proboscidians
Doubled letters
5
Ending in S
10
Most frequent letter
I (13)

Questions

How many 13-letter words matching ____o___d____ are there?

15. 4 of them are common words.

What is a common example?

ACKNOWLEDGING is among the common words in this set.