13-Letter Words Matching __I_______O__

There are 22 13-letter words that match __I_______O__. 7 are common words, such as CHIROPRACTORS and EVISCERATIONS. A rarer one is UNIONISATIONS. In this set, S is the most frequent open letter (19 words). 5 words contain a doubled letter.

Full list 22

chiropractorseviscerationsneighborhoodsphilodendronsprimogenitorsspinsterhoodsunionizationsalimentationsreimpositionsrhizomorphousscintillatorsdeionizationsepizootiologyreimpressionsreinspectionsstigmasterolsthiabendazoletriamcinolonetrichlorphonstrifurcationstriplicationsunionisations

About this list

Words
22 (7 common words)
Common example
chiropractors
Rare example
unionisations
Doubled letters
5
Ending in S
19
Most frequent letter
S (19)

Questions

How many 13-letter words matching __i_______o__ are there?

22. 7 of them are common words.

What is a common example?

CHIROPRACTORS is among the common words in this set.