13-Letter Words Matching ____I____O___

There are 32 13-letter words that match ____I____O___. 11 are common words, such as ARCHITECTONIC and GRAVITATIONAL. A rarer one is TERMINATIONAL. 2 words contain a doubled letter.

Full list 32

Common words

architectonicgravitationalinquisitionalinspirationalinstitutionalkaleidoscopeskaleidoscopicmultinationalparticleboardpassionflowerrequisitionedamphidiploids
architectonicgravitationalinquisitionalinspirationalinstitutionalkaleidoscopeskaleidoscopicmultinationalparticleboardpassionflowerrequisitionedamphidiploidsarchidiaconaldeclinationalexaminationalimplicationalmastigophoranrequisitioneracquisitionalamphidiploidyattributionalcombinationalcorticotropincysticercoidscysticercosescysticercosisfestivalgoersinclinationalmultiemployermultiregionalquasiperiodicterminational

About this list

Words
32 (11 common words)
Common example
architectonic
Rare example
terminational
Doubled letters
2
Ending in S
6

Questions

How many 13-letter words matching ____i____o___ are there?

32. 11 of them are common words.

What is a common example?

ARCHITECTONIC is among the common words in this set.