15-Letter Words Matching ____________IA_

There are 42 15-letter words that match ____________IA_. 8 are common words, such as CIRCUMFERENTIAL and CLAUSTROPHOBIAS. A rarer one is ULTRACOMMERCIAL. In this set, T is the most frequent open letter (36 words). 8 words contain a doubled letter.

Full list 42

Common words

circumferentialclaustrophobiasentrepreneurialinconsequentialintelligentsiasparliamentarianphantasmagoriasuncontroversialachondroplasiascrossopterygianimprovisatorialintrapreneurial
circumferentialclaustrophobiasentrepreneurialinconsequentialintelligentsiasparliamentarianphantasmagoriasuncontroversialachondroplasiascrossopterygianimprovisatorialintrapreneurialjurisprudentiallactovegetariannecessaritariannonconfidentialoverinfluentialpsychometricianantiaphrodisiacantiegalitarianantilibertarianbiostatisticiancomputerphobiascorynebacterialenterobacterialhemoglobinuriashyperaesthesiashyperlipidemiashypomagnesemiasinterprovincialmultimillennialnonprofessorialnontotalitarianorganomercurialplatitudinarianpostmillenarianprepresidentialpsychohistoriansemiterrestrialtelangiectasiastransubstantialultracommercial

About this list

Words
42 (8 common words)
Common example
circumferential
Rare example
ultracommercial
Doubled letters
8
Ending in S
10
Most frequent letter
T (36)

Questions

How many 15-letter words matching ____________ia_ are there?

42. 8 of them are common words.

What is a common example?

CIRCUMFERENTIAL is among the common words in this set.