13-Letter Words Matching ___O_____O___

There are 29 13-letter words that match ___O_____O___. 6 are common words, such as INFORMATIONAL and MONONUCLEOSES. A rarer one is XENODIAGNOSIS. In this set, I is the most frequent open letter (25 words). 2 words contain a doubled letter.

Full list 29

Common words

informationalmononucleosesmononucleosisreconditionedunconditionalunconditionedassociationalendometriosesendometriosisreformationaltoxoplasmosisbiconditional
informationalmononucleosesmononucleosisreconditionedunconditionalunconditionedassociationalendometriosesendometriosisreformationaltoxoplasmosisbiconditionalcytotaxonomicdeconditioneddeformationalendosymbiontsendosymbiosesendosymbiosisendosymbioticendotheliomasfluorochromesglioblastomasmesotheliomasserodiagnosesserodiagnosisthrottleholdstoxoplasmosesxenodiagnosesxenodiagnosis

About this list

Words
29 (6 common words)
Common example
informational
Rare example
xenodiagnosis
Doubled letters
2
Ending in S
18
Most frequent letter
I (25)

Questions

How many 13-letter words matching ___o_____o___ are there?

29. 6 of them are common words.

What is a common example?

INFORMATIONAL is among the common words in this set.