14-Letter Words Matching I_______O_____

There are 19 14-letter words that match I_______O_____. 4 are common words, such as ICHTHYOLOGISTS and IMPRESSIONABLE. A rarer one is ISOCHROMOSOMES. In this set, N is the most frequent open letter (16 words). 8 words contain a doubled letter.

Full list 19

ichthyologistsimpressionableimpressionismsimpressionistsichthyologicalimmunoglobulininflectionallyinflectionlessinstructorshipinterferometerinterferometryintervalometerimmunoblottingindecomposableinterferogramsinterinvolvinginterparochialirreligionistsisochromosomes

About this list

Words
19 (4 common words)
Common example
ichthyologists
Rare example
isochromosomes
Doubled letters
8
Ending in S
7
Most frequent letter
N (16)

Questions

How many 14-letter words matching i_______o_____ are there?

19. 4 of them are common words.

What is a common example?

ICHTHYOLOGISTS is among the common words in this set.