10-Letter Words Matching ____I_O___

There are 71 10-letter words that match ____I_O___. 15 are common words, such as CARCINOGEN and CARCINOMAS. A rarer one is TRETINOINS. In this set, S is the most frequent open letter (54 words). 15 words contain a doubled letter.

Full list 71

Common words

carcinogencarcinomascarnivorescortisonescruciformscuneiformsescritoiregarrisonedhandiworkshardihoodsherbivoresimprisoned
carcinogencarcinomascarnivorescortisonescruciformscuneiformsescritoiregarrisonedhandiworkshardihoodsherbivoresimprisonedjettisonedpetticoatstragicomicamphibolesamphibolicbandicootsbarbitonesbyssinosiscaseinogencentipoisechemisorbscherimoyasfibrinogengoldilockslongicornsmatrilocalmillivoltsmulticolormultivocalpatrilocalpepsinogenpollinosespollinosisraffinosessomniloquyversicolorarabinosesarchivoltsbyssinosescalcicolescalcinosescalcinosiscalcitonincarcinoidschirimoyascoprisonercorticoidsdulcimoresempoisonedfibrinoidsfrugivoresgolliwoggsheroicomichybridomaslustihoodsmanticoresmillimolarmillimolesmultifocalmultilobedmultimodalmultipolarmultipowernautiloidsretailoredrhytidomesstaminodiatraditorestretinoins

About this list

Words
71 (15 common words)
Common example
carcinogen
Rare example
tretinoins
Doubled letters
15
Ending in S
42
Most frequent letter
S (54)

Questions

How many 10-letter words matching ____i_o___ are there?

71. 15 of them are common words.

What is a common example?

CARCINOGEN is among the common words in this set.