15-Letter Words Matching ____A________A_

There are 16 15-letter words that match ____A________A_. 1 are common words, such as EXTRACURRICULAR and GALVANOMETRICAL. A rarer one is ULTRASTRUCTURAL. 4 words contain a doubled letter.

Full list 16

extracurriculargalvanometricalinfrastructuralintrapreneurialjuxtapositionalphilanthropicalantiaphrodisiacbiomathematicalbougainvillaeasintraperitonealmechanochemicalnonmathematicaltetrahydrofurantetramethylleadultracommercialultrastructural

About this list

Words
16 (1 common words)
Common example
extracurricular
Rare example
ultrastructural
Doubled letters
4
Ending in S
1

Questions

How many 15-letter words matching ____a________a_ are there?

16. 1 of them are common words.

What is a common example?

EXTRACURRICULAR is among the common words in this set.