13-Letter Words Matching I_________O__

There are 71 13-letter words that match I_________O__. 46 are common words, such as IDEALIZATIONS and ILLUMINATIONS. A rarer one is ISOCHROMOSOME. In this set, S is the most frequent open letter (68 words). 21 words contain a doubled letter.

Full list 71

Common words

idealizationsilluminationsillustrationsimmunizationsimperfectionsimpersonatorsimplantationsimpregnationsinactivationsinaugurationsincinerationsinconspicuous
idealizationsilluminationsillustrationsimmunizationsimperfectionsimpersonatorsimplantationsimpregnationsinactivationsinaugurationsincinerationsinconspicuousincriminatoryincrustationsindiscretionsinfiltrationsinflammationsingratiationsinsectivorousinseminationsinstallationsinstantaneousinstillationsinsurrectionsinterceptionsintercessionsinterdictionsinterjectionsinterlocutorsinterlocutoryintermissionsinterrogatorsinterrogatoryinterruptionsintersectionsintersessionsinterventionsintimidationsintoxicationsintroductionsintroversionsinvalidationsinvestigatorsinvestigatoryinvigorationsirresolutionsimmoderationsimprovisatoryincorruptionsinefficaciousinhomogeneousinstaurationsinsufflationsintellectionsintrojectionsintromissionsinvaginationsimprovisatoreimprovisatoriimprovisatorsincorporatorsinfibulationsinhabitationsinosculationsinsanitationsinspissationsintenerationsinteroceptorsinterpolatorsinvigilationsisochromosome

About this list

Words
71 (46 common words)
Common example
idealizations
Rare example
isochromosome
Doubled letters
21
Ending in S
63
Most frequent letter
S (68)

Questions

How many 13-letter words matching i_________o__ are there?

71. 46 of them are common words.

What is a common example?

IDEALIZATIONS is among the common words in this set.