12-Letter Words Matching __I__O______

There are 40 12-letter words that match __I__O______. 15 are common words, such as ARISTOCRATIC and CHIAROSCUROS. A rarer one is TRIPHOSPHATE. In this set, S is the most frequent open letter (35 words). 8 words contain a doubled letter.

Full list 40

Common words

aristocraticchiaroscurosepiglottidesepiglottisesepiscopaciesgrievousnessguillotiningrailroadingssailboarderssailboardingseismographsseismography
aristocraticchiaroscurosepiglottidesepiglottisesepiscopaciesgrievousnessguillotiningrailroadingssailboarderssailboardingseismographsseismographyseismologiesseismologistwhippoorwillcristobaliteepiscopalianepiscopalismepisiotomiesexiguousnessgriseofulvinopinionativereimpositionseismometersstichomythiatrichomonadsunimportanceepistolariesorismologiessailboatingsscissortailsseismometricstichomythictoilsomenesstrichologiestrichologisttrichopterantrichotomiestrichotomoustriphosphate

About this list

Words
40 (15 common words)
Common example
aristocratic
Rare example
triphosphate
Doubled letters
8
Ending in S
21
Most frequent letter
S (35)

Questions

How many 12-letter words matching __i__o______ are there?

40. 15 of them are common words.

What is a common example?

ARISTOCRATIC is among the common words in this set.