15-Letter Words Matching __I_________O__

There are 16 15-letter words that match __I_________O__. 3 are common words, such as REINTRODUCTIONS and STIGMATIZATIONS. A rarer one is TRISOCTAHEDRONS. 1 words contain a doubled letter.

Full list 16

reintroductionsstigmatizationstrivializationscoinstantaneousinitializationsopisthognathousaxiomatisationsaxiomatizationscoinvestigatorsepitheliomatousepithelizationsprioritizationsreimplantationsreinstallationsreinvigorationstrisoctahedrons

About this list

Words
16 (3 common words)
Common example
reintroductions
Rare example
trisoctahedrons
Doubled letters
1
Ending in S
16

Questions

How many 15-letter words matching __i_________o__ are there?

16. 3 of them are common words.

What is a common example?

REINTRODUCTIONS is among the common words in this set.