15-Letter Words Matching ____O_______A__

There are 23 15-letter words that match ____O_______A__. 0 are common words, such as ECONOMETRICIANS and METROPOLITANATE. A rarer one is UNPROFESSIONALS. In this set, R is the most frequent open letter (21 words). 4 words contain a doubled letter.

Full list 23

econometriciansmetropolitanatemicrophotographphotomicrographradiophotographsubcontraoctaveunproportionateastrophotographdephosphorylateethnohistoriansmacrophotographmicroearthquakemicroradiographneuroblastomataneurofibrillarynoncontemporaryoverorchestratephotodissociatephotolithographphytoflagellateprotohistoriansuniformitariansunprofessionals

About this list

Words
23 (0 common words)
Common example
econometricians
Rare example
unprofessionals
Doubled letters
4
Ending in S
5
Most frequent letter
R (21)

Questions

How many 15-letter words matching ____o_______a__ are there?

23. 0 of them are common words.

What is a common example?

ECONOMETRICIANS is among the common words in this set.