12-Letter Words Matching ___O_____O__

There are 66 12-letter words that match ___O_____O__. 18 are common words, such as ASSOCIATIONS and DEFOLIATIONS. A rarer one is WIDOWERHOODS. In this set, S is the most frequent open letter (56 words). 15 words contain a doubled letter.

Full list 66

Common words

associationsdefoliationsdeformationsdenominatorsdeportationsdicotyledonsexcoriationsexhortationsexportationsimportationsincommodiousinformations
associationsdefoliationsdeformationsdenominatorsdeportationsdicotyledonsexcoriationsexhortationsexportationsimportationsincommodiousinformationsliposuctionsnegotiationsrecognitionsreconditionsreformationssubornationschromatologycorollaceouscytotaxonomydemodulatorsectothermousendotheliomagamopetalousgamophyllousgamosepaloushomochromoushypognathoushypotensionslevorotatorymesognathousmonopetalousmonosepalousmonospermouspyroligneoussnooperscopesoporiferoussudoriferousvasodilatorsalloantibodyallopurinolsammoniationsascomycetousautoantibodychlorinatorscryosurgeonsdecollationsdeconditionsendosymbiontexfoliationsfluorochromeglioblastomahaloperidolshypolimnionsmesophyllousmesotheliomaneoorthodoxyoleoresinouspreovulatoryrecordationsrepossessorsthrottleholduncourageousvasopressorswidowerhoods

About this list

Words
66 (18 common words)
Common example
associations
Rare example
widowerhoods
Doubled letters
15
Ending in S
52
Most frequent letter
S (56)

Questions

How many 12-letter words matching ___o_____o__ are there?

66. 18 of them are common words.

What is a common example?

ASSOCIATIONS is among the common words in this set.