14-Letter Words Matching ____D________N

There are 12 14-letter words that match ____D________N. 2 are common words, such as HUMIDIFICATION and SOLIDIFICATION. A rarer one is RIGIDIFICATION. 2 words contain a doubled letter.

Full list 12

humidificationsolidificationremodificationscandalizationvasodilatationantidefamationantidepressionoverdecorationpostdepressionpseudoscorpionrecodificationrigidification

About this list

Words
12 (2 common words)
Common example
humidification
Rare example
rigidification
Doubled letters
2
Ending in S
0

Questions

How many 14-letter words matching ____d________n are there?

12. 2 of them are common words.

What is a common example?

HUMIDIFICATION is among the common words in this set.