15-Letter Words Matching ____A_______N__

There are 13 15-letter words that match ____A_______N__. 2 are common words, such as AGGRANDIZEMENTS and NONPARTICIPANTS. A rarer one is WELTANSCHAUUNGS. In this set, T is the most frequent open letter (12 words). 3 words contain a doubled letter.

Full list 13

aggrandizementsnonparticipantsjuxtapositionalmercaptopurinesbenzanthracenesnoncarcinogenicoveradjustmentsoverassessmentsphthalocyaninespostadolescentstrihalomethanesultramarathonerweltanschauungs

About this list

Words
13 (2 common words)
Common example
aggrandizements
Rare example
weltanschauungs
Doubled letters
3
Ending in S
10
Most frequent letter
T (12)

Questions

How many 15-letter words matching ____a_______n__ are there?

13. 2 of them are common words.

What is a common example?

AGGRANDIZEMENTS is among the common words in this set.