9-Letter Words Matching __I_____A

There are 20 9-letter words that match __I_____A. 4 are common words, such as CHIHUAHUA and EPITHELIA. A rarer one is TRICLINIA. In this set, I is the most frequent open letter (14 words). 1 words contain a doubled letter.

Full list 20

chihuahuaepitheliapoincianascintillachipolataclintoniagrindeliaiminoureaprimaveraprimiparaspirogyrachiasmatachirimoyaepicardiaepineuriaphilistiaprimordiaprincipiarhizomatatriclinia

About this list

Words
20 (4 common words)
Common example
chihuahua
Rare example
triclinia
Doubled letters
1
Ending in S
0
Most frequent letter
I (14)

Questions

How many 9-letter words matching __i_____a are there?

20. 4 of them are common words.

What is a common example?

CHIHUAHUA is among the common words in this set.