13-Letter Words Matching _________C_A_

There are 17 13-letter words that match _________C_A_. 7 are common words, such as ARITHMETICIAN and CLIOMETRICIAN. A rarer one is NONPOLITICIAN. In this set, I is the most frequent open letter (15 words). 5 words contain a doubled letter.

Full list 17

arithmeticiancliometriciandiagnosticianmathematiciannoncommercialpaediatricianstreptococcalcyberneticianextrajudiciallinguisticianmetaphysiciannongonococcalosteomalaciasgeopoliticianmaxillofacialmeningococcalnonpolitician

About this list

Words
17 (7 common words)
Common example
arithmetician
Rare example
nonpolitician
Doubled letters
5
Ending in S
1
Most frequent letter
I (15)

Questions

How many 13-letter words matching _________c_a_ are there?

17. 7 of them are common words.

What is a common example?

ARITHMETICIAN is among the common words in this set.