10-Letter Words Matching _I_____O__

There are 155 10-letter words that match _I_____O__. 61 are common words, such as BIRTHSTONE and BISECTIONS. A rarer one is WINDTHROWS. In this set, S is the most frequent open letter (117 words). 30 words contain a doubled letter.

Full list 155

Common words

birthstonebisectionsbituminouscircuitousdiaphanousdictationsdiffusionsdigestionsdimensionsdirectionsdisapprovedisastrous
birthstonebisectionsbituminouscircuitousdiaphanousdictationsdiffusionsdigestionsdimensionsdirectionsdisapprovedisastrousdiscomfortdiscommodediscomposedisharmonydissectorsdiversionsfictitiousfireproofshippodromeliberatorslibidinouslicentiouslifebloodslightprooflikelihoodlitigatorslivelihoodmicrophonemicroscopemicroscopymiddlemostmigrationsmineralogyminestronemiraculousmisogynousmistletoesnightspotsnincompoopnitrationspigeonholeridiculousrigamarolesidestrokesimpletonssimulatorssingletonssisterhoodsituationsvibraphonevibrationsvictoriousvideophonevillainousviolationsvitiationsviviparouswickerworkwidowhoodsriverfrontbibliogonybibliologybibliopolebioecologybiosensorsbipetalousbirthrootsbismuthousbitterrootcinquefoilcistaceousdiadromousdidynamousdigitiformdimorphousdipetalousdiphyllousdiphyodontdisembroildisepalousdispermousdispersoiddistichousdivinatoryfiddlewoodfieldstonefiliationshindermosthithermostliliaceouslimicolouslineationslinguiformmicrosporemigrainousmineraloidmisericordmitigatorynidicolousnidifugouspiliferouspitchstoneribbonwoodsiliculosesinistroustiliaceoustimberworktitrationsviniferousviolaceousbijectionsciliationscinemagoerdictyosomedicumarolsdicynodontdiseconomydispiteousdisseisorseicosanoidfiberscopefingerholdfingerpostfisherfolkgingerroothippiedomskinetosomelibrationslightwoodslipomatousliquationsliteratorsmicrofloramicroprobemidrashothmillefioriminischoolmisbuttonsmisemploysmisfeasorsmisreckonsmissiologymitigatorsnightglowsnightscopepickaroonspicketboatpicosecondsiltationsvictimhoodviraginousvitrectomywindthrows

About this list

Words
155 (61 common words)
Common example
birthstone
Rare example
windthrows
Doubled letters
30
Ending in S
84
Most frequent letter
S (117)

Questions

How many 10-letter words matching _i_____o__ are there?

155. 61 of them are common words.

What is a common example?

BIRTHSTONE is among the common words in this set.