14-Letter Words Matching ____O_____O___

There are 22 14-letter words that match ____O_____O___. 2 are common words, such as PRECONDITIONED and UNPROFESSIONAL. A rarer one is TREPONEMATOSIS. In this set, T is the most frequent open letter (18 words). 2 words contain a doubled letter.

Full list 22

preconditionedunprofessionalconformationalhistoplasmosisthyrotoxicosesthyrotoxicosischemotaxonomicconsociationalcyclohexanonesepizootiologichistoplasmosesimprovisatoresleukodystrophymetronidazolesneuroblastomasnonconditionedpaedomorphosespaedomorphosissporotrichosessporotrichosistreponematosestreponematosis

About this list

Words
22 (2 common words)
Common example
preconditioned
Rare example
treponematosis
Doubled letters
2
Ending in S
14
Most frequent letter
T (18)

Questions

How many 14-letter words matching ____o_____o___ are there?

22. 2 of them are common words.

What is a common example?

PRECONDITIONED is among the common words in this set.