15-Letter Words Matching _I_____O_______

There are 40 15-letter words that match _I_____O_______. 14 are common words, such as CINEMATOGRAPHER and CINEMATOGRAPHIC. A rarer one is SIGMOIDOSCOPIES. In this set, O is the most frequent open letter (34 words). 9 words contain a doubled letter.

Full list 40

Common words

cinematographercinematographiccircumlocutionsdisapprobationsdiscombobulateddiscombobulatesdisproportionalhistoriographermicrobiologicalmicrobiologistsmicroprocessorsmicroscopically
cinematographercinematographiccircumlocutionsdisapprobationsdiscombobulateddiscombobulatesdisproportionalhistoriographermicrobiologicalmicrobiologistsmicroprocessorsmicroscopicallymisappropriatedmisappropriatesbioastronauticscircumvolutionsdisharmoniouslyhistoriographicmicrophotographmicrosporangiummicrosporophyllmineralogicallysinistrodextraldialectologicaldialectologistsdichlorobenzenedichloroethanesdisconformitiesdisconsolationsdisproportionedliturgiologistsmicroevolutionsmicrophotometermicrophotometrymicroprojectionmicroprojectorsmicrosporocytesnincompooperiespinocytoticallysigmoidoscopies

About this list

Words
40 (14 common words)
Common example
cinematographer
Rare example
sigmoidoscopies
Doubled letters
9
Ending in S
18
Most frequent letter
O (34)

Questions

How many 15-letter words matching _i_____o_______ are there?

40. 14 of them are common words.

What is a common example?

CINEMATOGRAPHER is among the common words in this set.