15-Letter Words Matching ______A______I_

There are 12 15-letter words that match ______A______I_. 1 are common words, such as WHATCHAMACALLIT and HYPERCATALECTIC. A rarer one is THYROCALCITONIN. In this set, C is the most frequent open letter (12 words). 4 words contain a doubled letter.

Full list 12

whatchamacallithypercatalecticchorioallantoicchorioallantoisencephalopathichendecasyllabichistopathologicneuropathologicnonantagonisticnonrelativisticphytopathogenicthyrocalcitonin

About this list

Words
12 (1 common words)
Common example
whatchamacallit
Rare example
thyrocalcitonin
Doubled letters
4
Ending in S
1
Most frequent letter
C (12)

Questions

How many 15-letter words matching ______a______i_ are there?

12. 1 of them are common words.

What is a common example?

WHATCHAMACALLIT is among the common words in this set.